Do you have pf or ipfw running? are they accepting ICMP type 128, 129, 135,
136? the first 2 are for ping requests last 2 for Neighbor
solicitation/advertisement.
On Sat, Aug 5, 2017 at 8:35 PM, Greg Rivers <gcr+freebsd-stable at
tharned.org>
wrote:
> I have a couple of hosts on different networks running 11.1-RELEASE amd64.
> Neither host will auto-configure its IPv6 address, even though valid router
> advertisements[1] are present. Both hosts have two oce(4) interfaces
> aggregated in fail-over mode via lagg(4). The lagg interface is configured
> thusly (/etc/rc.conf):
>
> ifconfig_oce0="up"
> ifconfig_oce1="up"
> cloned_interfaces="lagg0"
> ifconfig_lagg0="inet xxx.xxx.217.100/25 laggproto failover laggport
oce0
> laggport oce1"
> defaultrouter="xxx.xxx.217.1"
> ip6addrctl_policy="ipv6_prefer"
> ifconfig_lagg0_ipv6="inet6 accept_rtadv"
> rtsold_enable="YES"
>
> The running interface looks like this:
> lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0
mtu
> 1500
> options=507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_
> MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO>
> ether ac:16:2d:1e:b8:80
> inet xxx.xxx.217.100 netmask 0xffffff80 broadcast xxx.xxx.217.127
> inet6 fe80::ae16:2dff:fe1e:b880%lagg0 prefixlen 64 scopeid 0xc
> nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
> media: Ethernet autoselect
> status: active
> groups: lagg
> laggproto failover lagghash l2,l3,l4
> laggport: oce0 flags=5<MASTER,ACTIVE>
> laggport: oce1 flags=0<>
>
> ndp(8) shows only:
> Neighbor Linklayer Address Netif Expire S
> Flags
> fe80::ae16:2dff:fe1e:b880%lagg0 ac:16:2d:1e:b8:80 lagg0 permanent R
>
> Other hosts (running RedHat 6) on the same network SLAAC just fine. Does
> anyone have insight into this problem or suggestions for troubleshooting?
>
> --
> Greg Rivers
>
>
> [1]
> Internet Control Message Protocol v6
> Type: Router Advertisement (134)
> Code: 0
> Checksum: 0x8176 [correct]
> [Checksum Status: Good]
> Cur hop limit: 64
> Flags: 0x00, Prf (Default Router Preference): Medium
> 0... .... = Managed address configuration: Not set
> .0.. .... = Other configuration: Not set
> ..0. .... = Home Agent: Not set
> ...0 0... = Prf (Default Router Preference): Medium (0)
> .... .0.. = Proxy: Not set
> .... ..0. = Reserved: 0
> Router lifetime (s): 1800
> Reachable time (ms): 0
> Retrans timer (ms): 0
> ICMPv6 Option (Source link-layer address : 64:a0:e7:45:63:43)
> Type: Source link-layer address (1)
> Length: 1 (8 bytes)
> Link-layer address: Cisco_45:63:43 (64:a0:e7:45:63:43)
> ICMPv6 Option (Prefix information : 26xx:xxxx:4013:23::/64)
> Type: Prefix information (3)
> Length: 4 (32 bytes)
> Prefix Length: 64
> Flag: 0xc0, On-link flag(L), Autonomous address-configuration
> flag(A)
> 1... .... = On-link flag(L): Set
> .1.. .... = Autonomous address-configuration flag(A): Set
> ..0. .... = Router address flag(R): Not set
> ...0 0000 = Reserved: 0
> Valid Lifetime: 2592000
> Preferred Lifetime: 604800
> Reserved
> Prefix: 26xx:xxxx:4013:23::
> ICMPv6 Option (MTU : 9216)
> Type: MTU (5)
> Length: 1 (8 bytes)
> Reserved
> MTU: 9216
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