Date: Sat, 05 Aug 2017 22:35:56 -0500 From: Greg Rivers <gcr+freebsd-stable@tharned.org> To: freebsd-stable@freebsd.org Subject: SLAAC not working Message-ID: <1646645.UkMcyRZBVl@flake.tharned.org>
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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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