Hello Benoit, > Temporarily giving up messing with veth devices (forgot dhcpd server for > now), I concentrated on setting up a basic VS with both IPv4 and IPv6 > addresses, using standard venet device. > > [...]
> Result: > > - IPv4 VS works as expected (ping succeeds from hardware node, external > server in same subnet, external server on another subnet). > > - IPv6 VS doesn't work !!! (ping6 works *only* between VS and hardware > node, not from external sources; VS has IPv6 address correctly defined, > as per ifconfig). > > Am I missing something ? > > I suspected it may be useful to set sysctl > net.ipv6.conf.<iface>.forwarding to 1, but : > - this turns the box in "router" mode, disabling RA acceptance from > default router (annoying) > - this doesn't work either !! Very interesting! I'm having exactly same problem here. IPv6 was working perfectly for me after some problems before several months. Now I had to reboot my HW node and IPv6 is gone. When I try to ping VE from real world I'm getting: > [EMAIL PROTECTED]:~$ ping6 2001:718:1:e::23:3257 > PING 2001:718:1:e::23:3257(2001:718:1:e::23:3257) 56 data bytes > From 2001:718:1:101::1 icmp_seq=0 Destination unreachable: Address unreachable > From 2001:718:1:101::1 icmp_seq=3 Destination unreachable: Address unreachable From HW node to VE or from one VE to another VE is IPv6 working fine. I think that HW node didn't sent some info to it's IPv6 gateway about presence of new IPv6 address. Sadly I'm clue less how to better debug this. But! I've discovered trick. Run alternate version of this on your HW node: > ifconfig eth0 add 2001:718:1:e::23:3257/64 > sleep 5 > ping6 -I 2001:718:1:e::23:3257 -c 1 2001:718:1:e::1 > ifconfig eth0 del 2001:718:1:e::23:3257/64 2001:718:1:e::23:3257 - IPv6 address of VE 2001:718:1:e::1 - gateway That will cause that router will learn about presence of VE. It lasts for several hours. I discovered it at about 17 clock and now at 22 are VE still IPv6 online... but I'm afraid that clearing IPv6 neighbours table on router will kill this. Something is not working on HW node. I'm running 2.6.18-028stab051 on Debian Etch. Output of sysctl -a |grep net.ipv6 | sort >/tmp/chlivek.ipv6 is attached. Hope someone will point out where problem is. Yesterday I've reboot my second HW node... -- ----------------------- Jan Tomasek aka Semik http://www.tomasek.cz/
net.ipv6.bindv6only = 0 net.ipv6.conf.all.accept_ra = 1 net.ipv6.conf.all.accept_ra_defrtr = 1 net.ipv6.conf.all.accept_ra_pinfo = 1 net.ipv6.conf.all.accept_ra_rtr_pref = 1 net.ipv6.conf.all.accept_redirects = 1 net.ipv6.conf.all.autoconf = 1 net.ipv6.conf.all.dad_transmits = 1 net.ipv6.conf.all.force_mld_version = 0 net.ipv6.conf.all.forwarding = 1 net.ipv6.conf.all.hop_limit = 64 net.ipv6.conf.all.max_addresses = 16 net.ipv6.conf.all.max_desync_factor = 600 net.ipv6.conf.all.mtu = 1280 net.ipv6.conf.all.regen_max_retry = 5 net.ipv6.conf.all.router_probe_interval = 60 net.ipv6.conf.all.router_solicitation_delay = 1 net.ipv6.conf.all.router_solicitation_interval = 4 net.ipv6.conf.all.router_solicitations = 3 net.ipv6.conf.all.temp_prefered_lft = 86400 net.ipv6.conf.all.temp_valid_lft = 604800 net.ipv6.conf.all.use_tempaddr = 0 net.ipv6.conf.default.accept_ra = 1 net.ipv6.conf.default.accept_ra_defrtr = 1 net.ipv6.conf.default.accept_ra_pinfo = 1 net.ipv6.conf.default.accept_ra_rtr_pref = 1 net.ipv6.conf.default.accept_redirects = 1 net.ipv6.conf.default.autoconf = 1 net.ipv6.conf.default.dad_transmits = 1 net.ipv6.conf.default.force_mld_version = 0 net.ipv6.conf.default.forwarding = 1 net.ipv6.conf.default.hop_limit = 64 net.ipv6.conf.default.max_addresses = 16 net.ipv6.conf.default.max_desync_factor = 600 net.ipv6.conf.default.mtu = 1280 net.ipv6.conf.default.regen_max_retry = 5 net.ipv6.conf.default.router_probe_interval = 60 net.ipv6.conf.default.router_solicitation_delay = 1 net.ipv6.conf.default.router_solicitation_interval = 4 net.ipv6.conf.default.router_solicitations = 3 net.ipv6.conf.default.temp_prefered_lft = 86400 net.ipv6.conf.default.temp_valid_lft = 604800 net.ipv6.conf.default.use_tempaddr = 0 net.ipv6.conf.eth0.accept_ra = 1 net.ipv6.conf.eth0.accept_ra_defrtr = 1 net.ipv6.conf.eth0.accept_ra_pinfo = 1 net.ipv6.conf.eth0.accept_ra_rtr_pref = 1 net.ipv6.conf.eth0.accept_redirects = 1 net.ipv6.conf.eth0.autoconf = 0 net.ipv6.conf.eth0.dad_transmits = 1 net.ipv6.conf.eth0.force_mld_version = 0 net.ipv6.conf.eth0.forwarding = 1 net.ipv6.conf.eth0.hop_limit = 64 net.ipv6.conf.eth0.max_addresses = 16 net.ipv6.conf.eth0.max_desync_factor = 600 net.ipv6.conf.eth0.mtu = 1500 net.ipv6.conf.eth0.regen_max_retry = 5 net.ipv6.conf.eth0.router_probe_interval = 60 net.ipv6.conf.eth0.router_solicitation_delay = 1 net.ipv6.conf.eth0.router_solicitation_interval = 4 net.ipv6.conf.eth0.router_solicitations = 3 net.ipv6.conf.eth0.temp_prefered_lft = 86400 net.ipv6.conf.eth0.temp_valid_lft = 604800 net.ipv6.conf.eth0.use_tempaddr = 0 net.ipv6.conf.lo.accept_ra = 1 net.ipv6.conf.lo.accept_ra_defrtr = 1 net.ipv6.conf.lo.accept_ra_pinfo = 1 net.ipv6.conf.lo.accept_ra_rtr_pref = 1 net.ipv6.conf.lo.accept_redirects = 1 net.ipv6.conf.lo.autoconf = 1 net.ipv6.conf.lo.dad_transmits = 1 net.ipv6.conf.lo.force_mld_version = 0 net.ipv6.conf.lo.forwarding = 1 net.ipv6.conf.lo.hop_limit = 64 net.ipv6.conf.lo.max_addresses = 16 net.ipv6.conf.lo.max_desync_factor = 600 net.ipv6.conf.lo.mtu = 16436 net.ipv6.conf.lo.regen_max_retry = 5 net.ipv6.conf.lo.router_probe_interval = 60 net.ipv6.conf.lo.router_solicitation_delay = 1 net.ipv6.conf.lo.router_solicitation_interval = 4 net.ipv6.conf.lo.router_solicitations = 3 net.ipv6.conf.lo.temp_prefered_lft = 86400 net.ipv6.conf.lo.temp_valid_lft = 604800 net.ipv6.conf.lo.use_tempaddr = -1 net.ipv6.conf.venet0.accept_ra = 1 net.ipv6.conf.venet0.accept_ra_defrtr = 1 net.ipv6.conf.venet0.accept_ra_pinfo = 1 net.ipv6.conf.venet0.accept_ra_rtr_pref = 1 net.ipv6.conf.venet0.accept_redirects = 1 net.ipv6.conf.venet0.autoconf = 1 net.ipv6.conf.venet0.dad_transmits = 1 net.ipv6.conf.venet0.force_mld_version = 0 net.ipv6.conf.venet0.forwarding = 1 net.ipv6.conf.venet0.hop_limit = 64 net.ipv6.conf.venet0.max_addresses = 16 net.ipv6.conf.venet0.max_desync_factor = 600 net.ipv6.conf.venet0.mtu = 1500 net.ipv6.conf.venet0.regen_max_retry = 5 net.ipv6.conf.venet0.router_probe_interval = 60 net.ipv6.conf.venet0.router_solicitation_delay = 1 net.ipv6.conf.venet0.router_solicitation_interval = 4 net.ipv6.conf.venet0.router_solicitations = 3 net.ipv6.conf.venet0.temp_prefered_lft = 86400 net.ipv6.conf.venet0.temp_valid_lft = 604800 net.ipv6.conf.venet0.use_tempaddr = 0 net.ipv6.icmp.ratelimit = 1000 net.ipv6.ip6frag_high_thresh = 262144 net.ipv6.ip6frag_low_thresh = 196608 net.ipv6.ip6frag_secret_interval = 600 net.ipv6.ip6frag_time = 60 net.ipv6.mld_max_msf = 64 net.ipv6.neigh.default.anycast_delay = 99 net.ipv6.neigh.default.app_solicit = 0 net.ipv6.neigh.default.base_reachable_time = 30 net.ipv6.neigh.default.base_reachable_time_ms = 30000 net.ipv6.neigh.default.delay_first_probe_time = 5 net.ipv6.neigh.default.gc_interval = 30 net.ipv6.neigh.default.gc_stale_time = 60 net.ipv6.neigh.default.gc_thresh1 = 128 net.ipv6.neigh.default.gc_thresh2 = 512 net.ipv6.neigh.default.gc_thresh3 = 1024 net.ipv6.neigh.default.locktime = 0 net.ipv6.neigh.default.mcast_solicit = 3 net.ipv6.neigh.default.proxy_delay = 79 net.ipv6.neigh.default.proxy_qlen = 64 net.ipv6.neigh.default.retrans_time = 1000 net.ipv6.neigh.default.retrans_time_ms = 1000 net.ipv6.neigh.default.ucast_solicit = 3 net.ipv6.neigh.default.unres_qlen = 3 net.ipv6.neigh.eth0.anycast_delay = 99 net.ipv6.neigh.eth0.app_solicit = 0 net.ipv6.neigh.eth0.base_reachable_time = 30 net.ipv6.neigh.eth0.base_reachable_time_ms = 30000 net.ipv6.neigh.eth0.delay_first_probe_time = 5 net.ipv6.neigh.eth0.gc_stale_time = 60 net.ipv6.neigh.eth0.locktime = 0 net.ipv6.neigh.eth0.mcast_solicit = 3 net.ipv6.neigh.eth0.proxy_delay = 79 net.ipv6.neigh.eth0.proxy_qlen = 64 net.ipv6.neigh.eth0.retrans_time = 1000 net.ipv6.neigh.eth0.retrans_time_ms = 1000 net.ipv6.neigh.eth0.ucast_solicit = 3 net.ipv6.neigh.eth0.unres_qlen = 3 net.ipv6.neigh.lo.anycast_delay = 99 net.ipv6.neigh.lo.app_solicit = 0 net.ipv6.neigh.lo.base_reachable_time = 30 net.ipv6.neigh.lo.base_reachable_time_ms = 30000 net.ipv6.neigh.lo.delay_first_probe_time = 5 net.ipv6.neigh.lo.gc_stale_time = 60 net.ipv6.neigh.lo.locktime = 0 net.ipv6.neigh.lo.mcast_solicit = 3 net.ipv6.neigh.lo.proxy_delay = 79 net.ipv6.neigh.lo.proxy_qlen = 64 net.ipv6.neigh.lo.retrans_time = 1000 net.ipv6.neigh.lo.retrans_time_ms = 1000 net.ipv6.neigh.lo.ucast_solicit = 3 net.ipv6.neigh.lo.unres_qlen = 3 net.ipv6.neigh.venet0.anycast_delay = 99 net.ipv6.neigh.venet0.app_solicit = 0 net.ipv6.neigh.venet0.base_reachable_time = 30 net.ipv6.neigh.venet0.base_reachable_time_ms = 30000 net.ipv6.neigh.venet0.delay_first_probe_time = 5 net.ipv6.neigh.venet0.gc_stale_time = 60 net.ipv6.neigh.venet0.locktime = 0 net.ipv6.neigh.venet0.mcast_solicit = 3 net.ipv6.neigh.venet0.proxy_delay = 79 net.ipv6.neigh.venet0.proxy_qlen = 64 net.ipv6.neigh.venet0.retrans_time = 1000 net.ipv6.neigh.venet0.retrans_time_ms = 1000 net.ipv6.neigh.venet0.ucast_solicit = 3 net.ipv6.neigh.venet0.unres_qlen = 3 net.ipv6.route.gc_elasticity = 0 net.ipv6.route.gc_interval = 30 net.ipv6.route.gc_min_interval = 0 net.ipv6.route.gc_min_interval_ms = 500 net.ipv6.route.gc_thresh = 1024 net.ipv6.route.gc_timeout = 60 net.ipv6.route.max_size = 4096 net.ipv6.route.min_adv_mss = 1 net.ipv6.route.mtu_expires = 600
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