Router Advertisement Daemon (radvd)<\/a> (wenn die Clients automatisch konfiguriert werden sollen) Wikipedia: NAT64<\/a> Subversion Mirror Sites<\/a><\/p>\n FreeBSD VLAN Configuration<\/a> getifaddrs — get interface addresses<\/a> DEC Direct Data Link Interface (DLI)<\/a> getifaddrs.c<\/a><\/p>\n
\nWikipedia: Router Advertisement Daemon (radvd)<\/a>, implements link-local advertisements of IPv6 router addresses and IPv6 routing prefixes using the Neighbor Discovery Protocol (NDP) => stateless autoconfiguration<\/p>\nNAT64<\/h4>\n
\nTAYGA<\/a>
\nNAT64 Kernel Module<\/a>
\ngithub.com\/fln\/nat64<\/a><\/p>\n\r\nlink local fe80::\r\nglobal unicase 2001:\r\n\r\n\/proc\/sys\/net\/ipv6\/conf\r\nall default eth0 eth1 lo\r\n\r\n\/proc\/sys\/net\/ipv6\/conf\/all\/forwarding => 1\r\n\r\nwell-known prefix, z.B.\r\nNAT64 64:ff9b::\/96\r\nALG Application Layer Gateway\r\nRR Resource Record\r\n<\/pre>\n
FreeBSD Subversion<\/h4>\n
FreeBSD VLAN<\/h4>\n
\nFreeBSD – Adding VLAN Tagged subinterface using ifconfig<\/a><\/p>\n\r\nstruct vlanreq {\r\n char vlr_parent[IFNAMSIZ];\r\n u_short vlr_tag;\r\n};\r\n<\/pre>\n\r\nStep 1: create the vlan subinterface\r\n# ifconfig vlan122 create\r\n\r\nStep 2: assign it a vlan ID and vlan device:\r\n# ifconfig vlan122 vlan 122 vlandev em0\r\n\r\nStep 3: check the vlan subinterface:\r\n# ifconfig vlan122\r\nvlan122: flags=8842<BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500\r\n ether 00:07:e9:a5:9b:fa\r\n media: Ethernet autoselect (1000baseTX <full-duplex>)\r\n status: active\r\n vlan: 122 parent interface: em0\r\n\r\nStep 4: assign ip address:\r\n# ifconfig vlan122 10.1.122.1\/24\r\n# ifconfig vlan122 up\r\n# ifconfig vlan122\r\nvlan122: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500\r\n ether 00:07:e9:a5:9b:fa\r\n inet 10.1.122.1 netmask 0xffffff00 broadcast 10.1.122.255\r\n media: Ethernet autoselect (1000baseTX <full-duplex>)\r\n status: active\r\n vlan: 122 parent interface: em0\r\n\r\nOr edit rc.conf:\r\ncloned_interfaces="vlan0"\r\nifconfig_vlan0="inet x.x.x.x netmask y.y.y.y vlan 2 vlandev em0"\r\n<\/pre>\n
FreeBSD Manual Pages<\/h4>\n
\nether_ntohost — Ethernet address conversion and lookup routines<\/a><\/p>\nFreeBSD Implementation<\/h4>\n
\nHow to know ip address for interfaces in c<\/a>
\nPolling interface names via SIOCGIFCONF in Linux<\/a>
\nBroadcasting and Determining Network Configuration<\/a>
\nFreeBSD: network interface information<\/a>
\nlo0 not in ioctl( SIOCGIFCONF )<\/a>
\nSOLVED: lo0 not in ioctl( SIOCGIFCONF )<\/a>
\nHow to get IPv6 address using getifaddrs and which version of glibc supports<\/a>
\nHow can I enumerate the list of network devices or interfaces in C or C++ in FreeBSD? [duplicate]<\/a>
\nRe: ioctl programming probs<\/a><\/p>\n\r\nLinux:\r\nstruct ifreq {\r\n char ifr_name[IFNAMSIZ]; \/* Interface name *\/\r\n union {\r\n struct sockaddr ifr_addr;\r\n struct sockaddr ifr_dstaddr;\r\n struct sockaddr ifr_broadaddr;\r\n struct sockaddr ifr_netmask;\r\n struct sockaddr ifr_hwaddr;\r\n short ifr_flags;\r\n int ifr_ifindex;\r\n int ifr_metric;\r\n int ifr_mtu;\r\n struct ifmap ifr_map;\r\n char ifr_slave[IFNAMSIZ];\r\n char ifr_newname[IFNAMSIZ];\r\n char *ifr_data;\r\n };\r\n};\r\n\r\nstruct ifconf {\r\n int ifc_len; \/* size of buffer *\/\r\n union {\r\n char *ifc_buf; \/* buffer address *\/\r\n struct ifreq *ifc_req; \/* array of structures *\/\r\n };\r\n};\r\n\r\nFreeBSD:\r\n\r\n\/*\r\n * Length of interface external name, including terminating '\0'.\r\n * Note: this is the same size as a generic device's external name.\r\n *\/\r\n#define IF_NAMESIZE 16\r\n#if __BSD_VISIBLE\r\n#define IFNAMSIZ IF_NAMESIZE\r\n#define IF_MAXUNIT 0x7fff \/* historical value *\/\r\n#endif\r\n#if __BSD_VISIBLE\r\n\r\n\/*\r\n * Interface request structure used for socket\r\n * ioctl's. All interface ioctl's must have parameter\r\n * definitions which begin with ifr_name. The\r\n * remainder may be interface specific.\r\n *\/\r\nstruct ifreq {\r\n char ifr_name[IFNAMSIZ]; \/* if name, e.g. "en0" *\/\r\n union {\r\n struct sockaddr ifru_addr;\r\n struct sockaddr ifru_dstaddr;\r\n struct sockaddr ifru_broadaddr;\r\n struct ifreq_buffer ifru_buffer;\r\n short ifru_flags[2];\r\n short ifru_index;\r\n int ifru_jid;\r\n int ifru_metric;\r\n int ifru_mtu;\r\n int ifru_phys;\r\n int ifru_media;\r\n caddr_t ifru_data;\r\n int ifru_cap[2];\r\n u_int ifru_fib;\r\n } ifr_ifru;\r\n#define ifr_addr ifr_ifru.ifru_addr \/* address *\/\r\n#define ifr_dstaddr ifr_ifru.ifru_dstaddr \/* other end of p-to-p link *\/\r\n#define ifr_broadaddr ifr_ifru.ifru_broadaddr \/* broadcast address *\/\r\n#define ifr_buffer ifr_ifru.ifru_buffer \/* user supplied buffer with its length *\/\r\n#define ifr_flags ifr_ifru.ifru_flags[0] \/* flags (low 16 bits) *\/\r\n#define ifr_flagshigh ifr_ifru.ifru_flags[1] \/* flags (high 16 bits) *\/\r\n#define ifr_jid ifr_ifru.ifru_jid \/* jail\/vnet *\/\r\n#define ifr_metric ifr_ifru.ifru_metric \/* metric *\/\r\n#define ifr_mtu ifr_ifru.ifru_mtu \/* mtu *\/\r\n#define ifr_phys ifr_ifru.ifru_phys \/* physical wire *\/\r\n#define ifr_media ifr_ifru.ifru_media \/* physical media *\/\r\n#define ifr_data ifr_ifru.ifru_data \/* for use by interface *\/\r\n#define ifr_reqcap ifr_ifru.ifru_cap[0] \/* requested capabilities *\/\r\n#define ifr_curcap ifr_ifru.ifru_cap[1] \/* current capabilities *\/\r\n#define ifr_index ifr_ifru.ifru_index \/* interface index *\/\r\n#define ifr_fib ifr_ifru.ifru_fib \/* interface fib *\/\r\n};\r\n\r\n\r\n\/*\r\n * Structure used in SIOCGIFCONF request.\r\n * Used to retrieve interface configuration\r\n * for machine (useful for programs which\r\n * must know all networks accessible).\r\n *\/\r\nstruct ifconf {\r\n int ifc_len; \/* size of associated buffer *\/\r\n union {\r\n caddr_t ifcu_buf;\r\n struct ifreq *ifcu_req;\r\n } ifc_ifcu;\r\n#define ifc_buf ifc_ifcu.ifcu_buf \/* buffer address *\/\r\n#define ifc_req ifc_ifcu.ifcu_req \/* array of structures returned *\/\r\n};\r\n\r\n\/*-\r\n * Interface flags are of two types: network stack owned flags, and driver\r\n * owned flags. Historically, these values were stored in the same ifnet\r\n * flags field, but with the advent of fine-grained locking, they have been\r\n * broken out such that the network stack is responsible for synchronizing\r\n * the stack-owned fields, and the device driver the device-owned fields.\r\n * Both halves can perform lockless reads of the other half's field, subject\r\n * to accepting the involved races.\r\n *\r\n * Both sets of flags come from the same number space, and should not be\r\n * permitted to conflict, as they are exposed to user space via a single\r\n * field.\r\n *\r\n * The following symbols identify read and write requirements for fields:\r\n *\r\n * (i) if_flags field set by device driver before attach, read-only there\r\n * after.\r\n * (n) if_flags field written only by the network stack, read by either the\r\n * stack or driver.\r\n * (d) if_drv_flags field written only by the device driver, read by either\r\n * the stack or driver.\r\n *\/\r\n#define IFF_UP 0x1 \/* (n) interface is up *\/\r\n#define IFF_BROADCAST 0x2 \/* (i) broadcast address valid *\/\r\n#define IFF_DEBUG 0x4 \/* (n) turn on debugging *\/\r\n#define IFF_LOOPBACK 0x8 \/* (i) is a loopback net *\/\r\n#define IFF_POINTOPOINT 0x10 \/* (i) is a point-to-point link *\/\r\n#define IFF_SMART 0x20 \/* (i) interface manages own routes *\/\r\n#define IFF_DRV_RUNNING 0x40 \/* (d) resources allocated *\/\r\n#define IFF_NOARP 0x80 \/* (n) no address resolution protocol *\/\r\n#define IFF_PROMISC 0x100 \/* (n) receive all packets *\/\r\n#define IFF_ALLMULTI 0x200 \/* (n) receive all multicast packets *\/\r\n#define IFF_DRV_OACTIVE 0x400 \/* (d) tx hardware queue is full *\/\r\n#define IFF_SIMPLEX 0x800 \/* (i) can't hear own transmissions *\/\r\n#define IFF_LINK0 0x1000 \/* per link layer defined bit *\/\r\n#define IFF_LINK1 0x2000 \/* per link layer defined bit *\/\r\n#define IFF_LINK2 0x4000 \/* per link layer defined bit *\/\r\n#define IFF_ALTPHYS IFF_LINK2 \/* use alternate physical connection *\/\r\n#define IFF_MULTICAST 0x8000 \/* (i) supports multicast *\/\r\n#define IFF_CANTCONFIG 0x10000 \/* (i) unconfigurable using ioctl(2) *\/\r\n#define IFF_PPROMISC 0x20000 \/* (n) user-requested promisc mode *\/\r\n#define IFF_MONITOR 0x40000 \/* (n) user-requested monitor mode *\/\r\n#define IFF_STATICARP 0x80000 \/* (n) static ARP *\/\r\n#define IFF_DYING 0x200000 \/* (n) interface is winding down *\/\r\n#define IFF_RENAMING 0x400000 \/* (n) interface is being renamed *\/\r\n<\/pre>\n\r\n\/* Throughout this file, IP addresses are expected to be in\r\n * the same byte order as in IP_PCB. *\/\r\n\r\n\/** must be the maximum of all used hardware address lengths\r\n across all types of interfaces in use *\/\r\n#define NETIF_MAX_HWADDR_LEN 6U\r\n\r\n\/** Whether the network interface is 'up'. This is\r\n * a software flag used to control whether this network\r\n * interface is enabled and processes traffic.\r\n * It is set by the startup code (for static IP configuration) or\r\n * by dhcp\/autoip when an address has been assigned.\r\n *\/\r\n#define NETIF_FLAG_UP 0x01U\r\n\/** If set, the netif has broadcast capability.\r\n * Set by the netif driver in its init function. *\/\r\n#define NETIF_FLAG_BROADCAST 0x02U\r\n\/** If set, the netif is one end of a point-to-point connection.\r\n * Set by the netif driver in its init function. *\/\r\n#define NETIF_FLAG_POINTTOPOINT 0x04U\r\n\/** If set, the interface is configured using DHCP.\r\n * Set by the DHCP code when starting or stopping DHCP. *\/\r\n#define NETIF_FLAG_DHCP 0x08U\r\n\/** If set, the interface has an active link\r\n * (set by the network interface driver).\r\n * Either set by the netif driver in its init function (if the link\r\n * is up at that time) or at a later point once the link comes up\r\n * (if link detection is supported by the hardware). *\/\r\n#define NETIF_FLAG_LINK_UP 0x10U\r\n\/** If set, the netif is an ethernet device using ARP.\r\n * Set by the netif driver in its init function.\r\n * Used to check input packet types and use of DHCP. *\/\r\n#define NETIF_FLAG_ETHARP 0x20U\r\n\/** If set, the netif is an ethernet device. It might not use\r\n * ARP or TCP\/IP if it is used for PPPoE only.\r\n *\/\r\n#define NETIF_FLAG_ETHERNET 0x40U\r\n\/** If set, the netif has IGMP capability.\r\n * Set by the netif driver in its init function. *\/\r\n#define NETIF_FLAG_IGMP 0x80U\r\n\r\n\/** Generic data structure used for all lwIP network interfaces.\r\n * The following fields should be filled in by the initialization\r\n * function for the device driver: hwaddr_len, hwaddr[], mtu, flags *\/\r\nstruct netif {\r\n \/** pointer to next in linked list *\/\r\n struct netif *next;\r\n \r\n \/** IP address configuration in network byte order *\/\r\n ip_addr_t ip_addr;\r\n ip_addr_t netmask;\r\n ip_addr_t gw;\r\n \r\n \/*** LWIP_IPV6 ***********************************************************\/\r\n \/** Array of IPv6 addresses for this netif. *\/\r\n ip6_addr_t ip6_addr[LWIP_IPV6_NUM_ADDRESSES];\r\n \/** The state of each IPv6 address (Tentative, Preferred, etc).\r\n * @see ip6_addr.h *\/\r\n u8_t ip6_addr_state[LWIP_IPV6_NUM_ADDRESSES];\r\n\r\n \/** This function is called by the network device driver\r\n * to pass a packet up the TCP\/IP stack. *\/\r\n netif_input_fn input;\r\n \/** This function is called by the IP module when it wants\r\n * to send a packet on the interface. This function typically\r\n * first resolves the hardware address, then sends the packet. *\/\r\n netif_output_fn output;\r\n \/** This function is called by the ARP module when it wants\r\n * to send a packet on the interface. This function outputs\r\n * the pbuf as-is on the link medium. *\/\r\n netif_linkoutput_fn linkoutput;\r\n \r\n \/*** LWIP_IPV6 ***********************************************************\/\r\n \/** This function is called by the IPv6 module when it wants\r\n * to send a packet on the interface. This function typically\r\n * first resolves the hardware address, then sends the packet. *\/\r\n netif_output_ip6_fn output_ip6;\r\n \r\n \/*** LWIP_NETIF_STATUS_CALLBACK ******************************************\/\r\n \/** This function is called when the netif state is set to up or down *\/\r\n netif_status_callback_fn status_callback;\r\n \r\n \/*** LWIP_NETIF_LINK_CALLBACK ********************************************\/\r\n \/** This function is called when the netif link is set to up or down *\/\r\n netif_status_callback_fn link_callback;\r\n \r\n \/*** LWIP_NETIF_REMOVE_CALLBACK ******************************************\/\r\n \/** This function is called when the netif has been removed *\/\r\n netif_status_callback_fn remove_callback;\r\n \r\n \/** This field can be set by the device driver and could point\r\n * to state information for the device. *\/\r\n void *state;\r\n \r\n \/*** LWIP_DHCP ***********************************************************\/\r\n \/** the DHCP client state information for this netif *\/\r\n struct dhcp *dhcp;\r\n \r\n \/*** LWIP_AUTOIP *********************************************************\/\r\n \/** the AutoIP client state information for this netif *\/\r\n struct autoip *autoip;\r\n \r\n \/*** LWIP_IPV6_AUTOCONFIG ************************************************\/\r\n \/** is this netif enabled for IPv6 autoconfiguration *\/\r\n u8_t ip6_autoconfig_enabled;\r\n \r\n \/*** LWIP_IPV6_SEND_ROUTER_SOLICIT ***************************************\/\r\n \/** Number of Router Solicitation messages that remain to be sent. *\/\r\n u8_t rs_count;\r\n \r\n \/*** LWIP_IPV6_DHCP6 *****************************************************\/\r\n \/** the DHCPv6 client state information for this netif *\/\r\n struct dhcp6 *dhcp6;\r\n \r\n \/*** LWIP_NETIF_HOSTNAME *************************************************\/\r\n \/* the hostname for this netif, NULL is a valid value *\/\r\n char* hostname;\r\n \r\n \/** maximum transfer unit (in bytes) *\/\r\n u16_t mtu;\r\n \/** number of bytes used in hwaddr *\/\r\n u8_t hwaddr_len;\r\n \/** link level hardware address of this interface *\/\r\n u8_t hwaddr[NETIF_MAX_HWADDR_LEN];\r\n \/** flags (see NETIF_FLAG_ above) *\/\r\n u8_t flags;\r\n \/** descriptive abbreviation *\/\r\n char name[2];\r\n \/** number of this interface *\/\r\n u8_t num;\r\n \r\n \/*** LWIP_SNMP ***********************************************************\/\r\n \/** link type (from "snmp_ifType" enum from snmp.h) *\/\r\n u8_t link_type;\r\n \/** (estimate) link speed *\/\r\n u32_t link_speed;\r\n \/** timestamp at last change made (up\/down) *\/\r\n u32_t ts;\r\n \/** counters *\/\r\n u32_t ifinoctets;\r\n u32_t ifinucastpkts;\r\n u32_t ifinnucastpkts;\r\n u32_t ifindiscards;\r\n u32_t ifoutoctets;\r\n u32_t ifoutucastpkts;\r\n u32_t ifoutnucastpkts;\r\n u32_t ifoutdiscards;\r\n \r\n \/*** LWIP_IGMP ***********************************************************\/\r\n \/** This function could be called to add or delete a entry in the multicast\r\n * filter table of the ethernet MAC.*\/\r\n netif_igmp_mac_filter_fn igmp_mac_filter;\r\n \r\n \/*** LWIP_IPV6 && LWIP_IPV6_MLD ******************************************\/\r\n \/** This function could be called to add or delete an entry in the IPv6 multicast\r\n * filter table of the ethernet MAC. *\/\r\n netif_mld_mac_filter_fn mld_mac_filter;\r\n \r\n \/*** LWIP_NETIF_HWADDRHINT ***********************************************\/\r\n u8_t *addr_hint;\r\n \r\n \/*** ENABLE_LOOPBACK *****************************************************\/\r\n \/* List of packets to be queued for ourselves. *\/\r\n struct pbuf *loop_first;\r\n struct pbuf *loop_last;\r\n \r\n u16_t loop_cnt_current;\r\n};\r\n<\/pre>\n\r\n#define SIOCSIFPHYADDR _IOW('i', 70, struct ifaliasreq) \/* set gif addres *\/\r\n#define SIOCGIFPSRCADDR _IOWR('i', 71, struct ifreq) \/* get gif psrc addr *\/\r\n#define SIOCGIFPDSTADDR _IOWR('i', 72, struct ifreq) \/* get gif pdst addr *\/\r\n<\/pre>\n\r\nstruct nd_ifinfo {\r\n u_int32_t linkmtu; \/* LinkMTU *\/\r\n u_int32_t maxmtu; \/* Upper bound of LinkMTU *\/\r\n u_int32_t basereachable; \/* BaseReachableTime *\/\r\n u_int32_t reachable; \/* Reachable Time *\/\r\n u_int32_t retrans; \/* Retrans Timer *\/\r\n u_int32_t flags; \/* Flags *\/\r\n int recalctm; \/* BaseReacable re-calculation timer *\/\r\n u_int8_t chlim; \/* CurHopLimit *\/\r\n u_int8_t initialized; \/* Flag to see the entry is initialized *\/\r\n \r\n \/* the following 3 members are for privacy extension for addrconf *\/\r\n u_int8_t randomseed0[8]; \/* upper 64 bits of MD5 digest *\/\r\n u_int8_t randomseed1[8]; \/* lower 64 bits (usually the EUI64 IFID) *\/\r\n u_int8_t randomid[8]; \/* current random ID *\/\r\n};\r\n\r\nstruct in6_ndireq {\r\n char ifname[IFNAMSIZ];\r\n struct nd_ifinfo ndi;\r\n};\r\n\r\nstruct in6_ndireq nd;\r\n\r\nmemset(&nd, 0, sizeof(nd));\r\nstrncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));\r\nerror = ioctl(s, SIOCGIFINFO_IN6, &nd);\r\n<\/pre>\n\r\n\/*\r\n * Structure of a Link-Level sockaddr:\r\n *\/\r\nstruct sockaddr_dl {\r\n u_char sdl_len; \/* Total length of sockaddr *\/\r\n u_char sdl_family; \/* AF_LINK *\/\r\n u_short sdl_index; \/* if != 0, system given index for interface *\/\r\n u_char sdl_type; \/* interface type *\/\r\n u_char sdl_nlen; \/* interface name length, no trailing 0 reqd. *\/\r\n u_char sdl_alen; \/* link level address length *\/\r\n u_char sdl_slen; \/* link layer selector length *\/\r\n char sdl_data[46]; \/* minimum work area, can be larger;\r\n contains both if name and ll address *\/\r\n};\r\n<\/pre>\n\r\n$2 = {sdl_len = 56 '8', sdl_family = 18 (AF_LINK), sdl_index = 1, sdl_type = 0x06 (IFT_ETHER), sdl_nlen = 3, sdl_alen = 6, sdl_slen = 0, sdl_data = "vr0", ...}\r\n$13 = {sdl_len = 56 '8', sdl_family = 18 (AF_LINK), sdl_index = 2, sdl_type = 0x06 (IFT_ETHER), sdl_nlen = 3, sdl_alen = 6, sdl_slen = 0, sdl_data = "vr1", ...}\r\n$14 = {sdl_len = 56 '8', sdl_family = 18 (AF_LINK), sdl_index = 3, sdl_type = 0x06 (IFT_ETHER), sdl_nlen = 3, sdl_alen = 6, sdl_slen = 0, sdl_data = "vr2", ...}\r\n$15 = {sdl_len = 56 '8', sdl_family = 18 (AF_LINK), sdl_index = 4, sdl_type = 0x18 (IFT_LOOP), sdl_nlen = 3, sdl_alen = 0, sdl_slen = 0, sdl_data = "lo0", ...}\r\n$16 = {sdl_len = 56 '8', sdl_family = 18 (AF_LINK), sdl_index = 5, sdl_type = 0xf6 (IFT_PFLOG), sdl_nlen = 6, sdl_alen = 0, sdl_slen = 0, sdl_data = "pflog0", ...}\r\n\r\nsdl->sdl_nlen \/* interface name length, no trailing 0 reqd. *\/\r\nsdl->sdl_alen \/* link level address length *\/\r\n\r\nsdl->sdl_type:\r\n\/usr\/include\/net\/if_types.h\r\n#define\tIFT_ETHER\t0x6\t\t\/* Ethernet CSMA\/CD *\/\r\n#define\tIFT_LOOP\t0x18\t\t\/* loopback *\/\r\n#define\tIFT_PFLOG\t0xf6 \/* PF firewall *\/\r\n<\/pre>\n\r\n#define ETH_ALEN\t6\t\t\/* Octets in one ethernet addr\t *\/\r\n<\/pre>\n
\r\nLinux:\r\n\r\n#define ETHER_ADDR_LEN ETH_ALEN \/* size of ethernet addr *\/\r\n\r\n\/* This is a name for the 48 bit ethernet address available on many\r\n systems. *\/\r\nstruct ether_addr\r\n{\r\n u_int8_t ether_addr_octet[ETH_ALEN];\r\n} __attribute__ ((__packed__));\r\n\r\n\r\nFreeBSD:\r\n\/*\r\n* The number of bytes in an\tethernet (MAC) address.\r\n*\/\r\n#define ETHER_ADDR_LEN\t 6\r\n\r\n\/*\r\n* Structure\tof a 48-bit Ethernet address.\r\n*\/\r\nstruct ether_addr {\r\n u_char octet[ETHER_ADDR_LEN];\r\n};\r\n\r\n<\/pre>\n