Re: Configuration problem with IPv6 router (cannot forward src)
On 07/06/2012 23:36, Bruce Cran wrote: I'm trying to set up a IPv6 router (running -current) on my home network. My ISP gives me a /128 via PPP and I have a /48 allocation, which I use to give em0 and tun0 public addresses in different subnets (tun0 is assigned the address via ppp.linkup). I've added all the IPv6 settings to rc.conf (ipv6_gateway_enable, ipv6_network_interfaces, rtadvd_enable etc.) and I can ping IPv6 sites from the router. rtadvd can be limited to operate on a specific interface. Try setting rtadvd_interfaces=em0 in /etc/rc.conf The problem is that rtadvd continues advertising the default gateway as tun0's link-local address - and pinging from a machine on the network results in cannot forward src messages on the router (strangely, despite hisaddr being fe80::205:... in ppp.log, the kernel logs the address as fe80:f::205:...). Try setting: ipv6_default_interface=tun0 and possibly also ipv6_defaultrouter=-interface tun0 I use a gif tunnel (IPv6 over IPv4) for my IPv6 connectivity -- no native support for IPv6 in my ADSL router -- so not exactly equivalent but pretty similar in many ways. Is there some extra configuration I've likely missed that's needed when using IPv6 via PPP? Probably. The good news is that once you've got it running the IPv6 support in FreeBSD is rock solid and works like a charm. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matt...@infracaninophile.co.uk Kent, CT11 9PW signature.asc Description: OpenPGP digital signature
Re: Configuration problem with IPv6 router (cannot forward src)
Make sure you are only advertising a /64 addr prefixlen in rtadvd.conf, and not the entire /48. On 6/7/2012 4:36 PM, Bruce Cran wrote: I'm trying to set up a IPv6 router (running -current) on my home network. My ISP gives me a /128 via PPP and I have a /48 allocation, which I use to give em0 and tun0 public addresses in different subnets (tun0 is assigned the address via ppp.linkup). I've added all the IPv6 settings to rc.conf (ipv6_gateway_enable, ipv6_network_interfaces, rtadvd_enable etc.) and I can ping IPv6 sites from the router. The problem is that rtadvd continues advertising the default gateway as tun0's link-local address - and pinging from a machine on the network results in cannot forward src messages on the router (strangely, despite hisaddr being fe80::205:... in ppp.log, the kernel logs the address as fe80:f::205:...). Is there some extra configuration I've likely missed that's needed when using IPv6 via PPP? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Configuration problem with IPv6 router (cannot forward src)
On 07/06/2012 23:56, Robert Bonomi wrote: Please provide the output from these two commands: ifconfig -a netstat -nr on both the router and on an 'inside' machine. (identifying which is which:) There is also a question of 'where' the /48 comes from -- and how traffic to those addresses is being routed from the outside world. The /48 came from my ISP, so it should be getting routed correctly. ifconfig -a (with ral0/lo0 removed): em0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST metric 0 mtu 1500 options=4219bRXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO ether [em0_MAC] inet 192.168.2.1 netmask 0xff00 broadcast 192.168.2.255 inet6 fe80::[em0_MAC]%em0 prefixlen 64 scopeid 0x1 inet6 [prefix]:a::b prefixlen 64 nd6 options=21PERFORMNUD,AUTO_LINKLOCAL media: Ethernet autoselect (1000baseT full-duplex) status: active em1: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST metric 0 mtu 1500 options=4219bRXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO ether [em1_MAC] inet6 fe80::[em1_MAC]%em1 prefixlen 64 scopeid 0x2 nd6 options=29PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL media: Ethernet autoselect (100baseTX full-duplex) status: active tun0: flags=8051UP,POINTOPOINT,RUNNING,MULTICAST metric 0 mtu 1492 options=8LINKSTATE inet6 fe80::[em0_MAC]%tun0 prefixlen 64 scopeid 0xf inet [MYADDR] -- [HISADDR] netmask 0xff00 inet6 [prefix]:c::b prefixlen 64 nd6 options=21PERFORMNUD,AUTO_LINKLOCAL Opened by PID 1092 Routing tables Internet: DestinationGatewayFlagsRefs Use Netif Expire default[HISADDR] UGS 0 2476 tun0 [MYADDR] link#15UHS 00lo0 [HISADDR] link#15UH 00 tun0 127.0.0.1 link#14UH 00lo0 192.168.2.0/24 link#1 U 0 3985em0 192.168.2.1link#1 UHS 00lo0 Internet6: Destination Gateway Flags Netif Expire ::/96 ::1 UGRSlo0 = default fe80::[em0_MAC]%tun0 UGS tun0 ::1 link#14 UH lo0 :::0.0.0.0/96 ::1 UGRSlo0 [prefix]:c::/64 link#15 U tun0 [prefix]:c::1 link#15 UHS lo0 [prefix]:a::/64 link#1 U em0 [prefix]:a::1 link#1 UHS lo0 fe80::/10 ::1 UGRSlo0 fe80::%em0/64 link#1 U em0 fe80::[em0_MAC]%em0 link#1UHS lo0 fe80::%em1/64 link#2 U em1 fe80::[em1_MAC]%em1 link#2UHS lo0 fe80::%lo0/64 link#14 U lo0 fe80::1%lo0 link#14 UHS lo0 fe80::%tun0/64link#15 US tun0 fe80::[em0_MAC]%tun0 link#15 UHS lo0 ff01::%em0/32 fe80::[em0_MAC]%em0 U em0 ff01::%em1/32 fe80::[em1_MAC]%em1 U em1 ff01::%lo0/32 ::1 U lo0 ff01::%tun0/32fe80::[em0_MAC]%tun0 US tun0 ff02::/16 ::1 UGRSlo0 ff02::%em0/32 fe80::[em0_MAC]%em0 U em0 ff02::%em1/32 fe80::[em1_MAC]%em1 U em1 ff02::%lo0/32 ::1 U lo0 ff02::%tun0/32fe80::[em0_MAC]%tun0 UGS tun0 rtadvd.conf contains: em0:\ :addrs#1:addr=[prefix]:a:::prefixlen#64;tc=ether:raflags=o: rc.conf contains: ifconfig_em0= inet 192.168.2.1 netmask 255.255.255.0 ifconfig_em0_ipv6= inet6 [prefix]:a::b ifconfig_em1=up pf_enable=YES gateway_enable=YES ppp_enable=YES ppp_nat=NO ppp_goscomb_mode=ddial ppp_goscomb_nat=NO ppp_profile=isp ipv6_gateway_enable=YES ipv6_network_interfaces=em0 em1 tun0 dhcpd_enable=YES dhcpd6_enable=NO dhcpd_flags=-q dhcpd6_flags=-q dhcpd_conf=/usr/local/etc/dhcpd.conf dhcpd6_conf=/usr/local/etc/dhcpd6.conf dhcpd_ifaces=em0 dhcpd6_ifaces=em0 dhcpd_withumask=022 dhcpd6_withumask=022 dhcpd_chuser_enable=YES dhcpd6_chuser_enable=YES dhcpd_withuser=dhcpd dhcpd6_withuser=dhcpd dhcpd_withgroup=dhcpd dhcpd6_withgroup=dhcpd dhcpd_chroot_enable=YES dhcpd6_chroot_enable=YES dhcpd_devfs_enable=YES dhcpd6_devfs_enable=YES dhcpd_rootdir=/var/db/dhcpd dhcpd6_rootdir=/var/db/dhcpd6 rtadvd_enable=NO rtadvd_interfaces=em0 I've tried configuring a machine with a static configuration, bypassing any issues with rtadvd/dhcpd6 so I'm fairly sure the problem is on the router. -- Bruce Cran ___ freebsd-questions@freebsd.org mailing list
Re: Configuration problem with IPv6 router (cannot forward src)
On 08/06/2012 06:59, Matthew Seaman wrote: Probably. The good news is that once you've got it running the IPv6 support in FreeBSD is rock solid and works like a charm. It turns out that PF was being too helpful and trying to NAT for both IPv4 and IPv6 - adding 'inet' to the nat on $ext_if... line fixed it. -- Bruce Cran ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Configuration problem with IPv6 router (cannot forward src)
I'm trying to set up a IPv6 router (running -current) on my home network. My ISP gives me a /128 via PPP and I have a /48 allocation, which I use to give em0 and tun0 public addresses in different subnets (tun0 is assigned the address via ppp.linkup). I've added all the IPv6 settings to rc.conf (ipv6_gateway_enable, ipv6_network_interfaces, rtadvd_enable etc.) and I can ping IPv6 sites from the router. The problem is that rtadvd continues advertising the default gateway as tun0's link-local address - and pinging from a machine on the network results in cannot forward src messages on the router (strangely, despite hisaddr being fe80::205:... in ppp.log, the kernel logs the address as fe80:f::205:...). Is there some extra configuration I've likely missed that's needed when using IPv6 via PPP? -- Bruce Cran ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Configuration problem with IPv6 router (cannot forward src)
From: Bruce Cran br...@cran.org.uk I'm trying to set up a IPv6 router (running -current) on my home network. My ISP gives me a /128 via PPP and I have a /48 allocation, which I use to give em0 and tun0 public addresses in different subnets (tun0 is assigned the address via ppp.linkup). I've added all the IPv6 settings to rc.conf (ipv6_gateway_enable, ipv6_network_interfaces, rtadvd_enable etc.) and I can ping IPv6 sites from the router. The problem is that rtadvd continues advertising the default gateway as tun0's link-local address - and pinging from a machine on the network results in cannot forward src messages on the router (strangely, despite hisaddr being fe80::205:... in ppp.log, the kernel logs the address as fe80:f::205:...). Is there some extra configuration I've likely missed that's needed when using IPv6 via PPP? Please provide the output from these two commands: ifconfig -a netstat -nr on both the router and on an 'inside' machine. (identifying which is which :) There is also a question of 'where' the /48 comes from -- and how traffic to those addresses is being routed from the outside world. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
