Bug 210340 - ipv6 alias, don't respond after a time
Summary: ipv6 alias, don't respond after a time
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 10.3-RELEASE
Hardware: Any Any
: --- Affects Some People
Assignee: freebsd-net mailing list
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-06-17 04:28 UTC by wekers
Modified: 2016-06-19 11:39 UTC (History)
0 users

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Description wekers 2016-06-17 04:28:24 UTC
Dear all, 


I have 5 ipv6 provided from my ISP, after some time, one or more alias dont respond anymore.

only work again if i have run manualy, and try two or three times  
remove and add again

$ ifconfig em0 inet6 2604:1x0::fd8:84xx -alias
$ ifconfig em0 inet6 2604:1x0::fd8:84xx prefixlen 48 alias


i have run tcpdump and show that only one of all alias did "neighbor solicitation"

*********************
tcpdump: listening on em0, link-type EN10MB (Ethernet), capture size 65535 bytes
23:00:41.092219 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2604:1x0::fd8:8xxx > 2604:1x0::1: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2604:1x0::1
	  source link-address option (1), length 8 (1): 00:16:3c:ab:ed:29
	    0x0000:  0016 3cab ed29

23:00:41.102175 IP6 (class 0xc0, hlim 255, next-header ICMPv6 (58) payload length: 32) 2604:1x0::1 > 2604:1x0::fd8:8xxx: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2604:1x0::1, Flags [router, solicited, override]
	  destination link-address option (2), length 8 (1): 00:0c:db:f5:6d:00
	    0x0000:  000c dbf5 6d00
*********************


------------
ndp -an
Neighbor                             Linklayer Address  Netif Expire    S Flags
2604:1x0::b482:cxx                   00:16:3c:ab:ed:xx    em0 permanent R 
2604:1x0::1                          00:0c:db:f5:6d:xx    em0 11s       R R
2604:1x0::687f:c8xx                  00:16:3c:ab:ed:xx    em0 permanent R 
2604:1x0::2369:68xx                  00:16:3c:ab:ed:xx    em0 permanent R 
fe80::2xx:3cff:feab:ed29%em0         00:16:3c:ab:ed:xx    em0 permanent R 
2604:1x0::fd8:84xx                   00:16:3c:ab:ed:xx    em0 permanent R 
2604:1x0::d0ae:20xx                  00:16:3c:ab:ed:xx    em0 permanent R 
------------


rc.conf
**********
ipv6_activate_all_interfaces="YES"
ifconfig_em0_ipv6="inet6 -ifdisabled accept_rtadv"
ip6addrctl_verbose="NO"
ip6addrctl_enable="YES"
ip6addrctl_policy="ipv6_prefer"
rtsold_enable="YES"
rtsold_flags="-aF"
ipv6_cpe_wanif="em0"
ipv6_gateway_enable="YES"

Ifconfig_em0_alias2="inet6 2604:1x0::b482:cxx prefixlen 48"
ipv6_defaultrouter="2604:1x0::1"
ifconfig_em0_alias3="inet6 2604:1x0::d0ae:20xx prefixlen 48"  
         "" remain aliases..
**********


Regards,
Fernando Gilli