Hi, It's like this: A eth0 ====== eth3 B eth1 eth0: 192.168.0.2/24 2020::2/128 eth3 192.168.0.254/24 2020::254/128 eth1 192.168.30.254 3030::254/128 I'm trying to ping B's eth1 address from A, but it only works in IPv4, in IPv6 it does not work, unless i put a route via eth3's address. regards Filipe Alexander Samad wrote: >Hi > >Sorry having a bit of a problem reading your diagram but is the >destination on the wire or is routed via box B > >have you tried a tcpdump on B to see what it sees ? > >A > > >On Mon, Sep 20, 2004 at 03:40:39AM +0100, filipe abrantes wrote: > > >>hi and thanks for replying, >> >>#ip r g 3030::254 >>3030::254 via 3030::254 dev eth0 src 2020::2 metric 0 >> cache mtu 1500 advmss 1440 >> >> >> >>Alexander Samad wrote: >> what do you get when you try >> >> >> ip r g 3030::254 >> >> A >> >> On Mon, Sep 20, 2004 at 02:57:17AM +0100, filipe abrantes wrote: >> * sorry for the other schema, it came out a mess. I hope >> this one is >> understandable. >> >> hi: >> >> I have this 2 boxes set up like this: >> >> >> 2020::2/128 >> 2020::254/128 3030::254/128 >> 192.168.0.2/24 192.168.0.254/24 >> >> 192.168.30.254/24 >> >> +-------+ eth0 >> eth3 >> +-------+ >> | |======================= | >> | eth1 >> | A >> | | B >> | ---- >> | >> | | >> | >> >> +------- >> + +------ >> -+ >> >> >> >> A >> >> # ip r l >> 192.168.30.254 dev eth0 scope link >> 192.168.0.0/24 dev eth0 scope link >> 169.254.0.0/16 dev lo scope link >> 127.0.0.0/8 dev lo scope link >> >> # ip -6 r l >> 2020::254 dev eth0 metric 1024 mtu 1500 advmss 1440 >> 3030::254 dev eth0 metric 1024 mtu 1500 advmss 1440 >> (...plus link local and multicast routes) >> >> >> B >> >> # ip r l >> 127.0.0.1 dev lo scope link >> 192.168.0.0/24 dev eth3 proto kernel scope link src >> 192.168.0.254 >> 192.168.30.0/24 dev eth1 proto kernel scope link src >> 192.168.30.254 >> >> # ip -6 r l >> 2020::2 dev eth3 metric 1024 mtu 1500 advmss 1440 >> metric10 64 >> (...plus link local and multicast routes) >> >> # cat /proc/sys/net/ipv4/ip_forward >> 1 >> #cat /proc/sys/net/ipv6/conf/all/forwarding >> 1 >> >> >> The problem is that i can ping 192.168.30.254 from A, but i >> can't ping >> 3030::254 from A, anyone has a clue why this happens? Is >> there any >> feature i need to turn on or anything misconfigured? Why >> does it work >> for IPv4 but not for IPv6? >> >> >> A -> B >> >> # ping 192.168.30.254 >> PING 192.168.30.254 (192.168.30.254) 56(84) bytes of data. >> 64 bytes from 192.168.30.254: icmp_seq=0 ttl=64 time=0.175 >> ms >> 64 bytes from 192.168.30.254: icmp_seq=1 ttl=64 time=0.122 >> ms >> >> #ping6 3030::254 >> PING 3030::254(3030::254) 56 data bytes >> From ::1 icmp_seq=0 Destination unreachable: Address >> unreachable >> From ::1 icmp_seq=1 Destination unreachable: Address >> unreachable >> >> >> Regards >> >> Filipe Abrantes >> _______________________________________________ >> LARTC mailing list / _L_A_R_T_C_@_m_a_i_l_m_a_n_._d_s_9_a_._n_l >> _h_t_t_p_:_/_/_m_a_i_l_m_a_n_._d_s_9_a_._n_l_/_m_a_i_l_m_a_n_/_l_i_s_t_i_n_f_o_/_l_a_r_t_c HOWTO: _h_t_t_p_:_/ >> _/_l_a_r_t_c_._o_r_g_/ >> >> _______________________________________________ >> LARTC mailing list / _L_A_R_T_C_@_m_a_i_l_m_a_n_._d_s_9_a_._n_l >> _h_t_t_p_:_/_/_m_a_i_l_m_a_n_._d_s_9_a_._n_l_/_m_a_i_l_m_a_n_/_l_i_s_t_i_n_f_o_/_l_a_r_t_c HOWTO: _h_t_t_p_:_/ >> _/_l_a_r_t_c_._o_r_g_/ >> >> >> > > >