On Tuesday 20 August 2013 23:12, Matt Whitlock wrote: > On Tuesday, 20 August 2013, at 11:10 pm, Denys Vlasenko wrote: > > But what if interface has no IPv6 addresses? > > Isn't the whole purpose of DHCP is to *acquire an address*? > > Interfaces that support IPv6 addressing should automatically > have IPv6 link-local addresses assigned by the kernel. > This happens on every modern system I've ever used. > If you're not seeing IPv6 link-local addresses on your interfaces, > it's probably because your kernel does not support IPv6. > If you have a modular kernel, try loading the "ipv6" module.
I manually configured one IPv6 address, on loopback: # ip a 1: lo: <LOOPBACK,UP,10000> mtu 65536 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host <----------------THIS ONE valid_lft forever preferred_lft forever 2: if: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:1d:7d:c2:ec:70 brd ff:ff:ff:ff:ff:ff inet 169.254.0.1/16 brd 169.254.255.255 scope global if inet 192.168.0.1/24 brd 192.168.0.255 scope global if 3: wifi0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000 link/ieee802.11 00:09:5b:69:17:c8 brd ff:ff:ff:ff:ff:ff 4: wlan0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc noqueue link/ether 00:09:5b:69:17:c8 brd ff:ff:ff:ff:ff:ff inet 10.0.0.7/24 brd 10.0.0.255 scope global wlan0 As you see, other ifaces are up too but have no IPv6 addresses whatsoever. My kernel definitely has IPv6 enabled (non-modular): # grep IPV6 .config CONFIG_IPV6=y CONFIG_IPV6_PRIVACY=y CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_ROUTE_INFO=y # CONFIG_IPV6_OPTIMISTIC_DAD is not set CONFIG_IPV6_MIP6=m CONFIG_IPV6_SIT=m # CONFIG_IPV6_SIT_6RD is not set CONFIG_IPV6_NDISC_NODETYPE=y CONFIG_IPV6_TUNNEL=m # CONFIG_IPV6_GRE is not set # CONFIG_IPV6_MULTIPLE_TABLES is not set # CONFIG_IPV6_MROUTE is not set CONFIG_NF_DEFRAG_IPV6=m CONFIG_NF_CONNTRACK_IPV6=m CONFIG_IP6_NF_MATCH_IPV6HEADER=m CONFIG_NF_NAT_IPV6=m Anyway, from the kernel sources I see that IPv6 autoconfiguration can be disabled. Therefore, reradles of why my system doesn't do autoconfiguraion the question remains: what udhcpc6 should do in this case? -- vda _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox