[vpsFree.cz: community-list] IPv6 problem with dovecot

[Jirka Bourek]

Pokud někde najdete, jak ho spustit z příkazové řádky - tak, aby to bylo 
stejně, jako když ho spustí ten systemd - můžete zkusit strace a 
zjistit, co dělá předtím, než vypíše tu chybovou hlášku. (Z těch 
syscallů by mohlo jít poznat, jak ověřuje podporu IPv6.)


On 12.1.2017 13:25, Wolf wrote:
> Ahoj,
> mam trosku problem s Dovecot (a mozna i necim dalsim, nevim). Z nejakeho
> duvodu si mysli, ze nemam IPv6 ve VPS.
>
> 	Jan 12 12:14:35 wolfsden systemd[1]: Binding to IPv6 address not available since kernel does not support IPv6.
> 	Jan 12 12:14:35 wolfsden systemd[1]: [/lib/systemd/system/dovecot.socket:8] Failed to parse address value, ignoring: [::]:143
> 	Jan 12 12:14:35 wolfsden systemd[1]: Binding to IPv6 address not available since kernel does not support IPv6.
> 	Jan 12 12:14:35 wolfsden systemd[1]: [/lib/systemd/system/dovecot.socket:10] Failed to parse address value, ignoring: [::]:993
>
> Nicmene server ipv6 samozrejme ma
>
> 	root at wolfsden:/# ip addr
> 	1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> 		link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 		inet 127.0.0.1/8 scope host lo
> 		inet6 ::1/128 scope host
> 		   valid_lft forever preferred_lft forever
> 	2: venet0: <BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
> 		link/void
> 		inet 127.0.0.2/32 scope host venet0
> 		inet 77.93.223.198/32 brd 77.93.223.198 scope global venet0:0
> 		inet6 2a01:430:17:1::ffff:96/128 scope global
> 		   valid_lft forever preferred_lft forever
> 	3: gre0: <NOARP> mtu 1476 qdisc noop state DOWN
> 		link/gre 0.0.0.0 brd 0.0.0.0
> 	4: gretap0: <BROADCAST,MULTICAST> mtu 1476 qdisc noop state DOWN qlen 1000
> 		link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
>
> Ping ven funguje
>
> 	root at wolfsden:/# ping6 ipv6.google.com
> 	PING ipv6.google.com(waw02s06-in-x0e.1e100.net) 56 data bytes
> 	64 bytes from waw02s06-in-x0e.1e100.net: icmp_seq=1 ttl=54 time=21.0 ms
> 	64 bytes from waw02s06-in-x0e.1e100.net: icmp_seq=2 ttl=54 time=20.8 ms
> 	64 bytes from waw02s06-in-x0e.1e100.net: icmp_seq=3 ttl=54 time=21.8 ms
>
> Pres jeden web jsem overil, ze funguje i ping6 smerem ke mne.
>
> 	root at wolfsden:/# test -f /proc/net/if_inet6 && echo "Running kernel is IPv6 ready"
> 	Running kernel is IPv6 ready
>
> 	root at wolfsden:/# cat /proc/sys/net/ipv6/conf/all/disable_ipv6
> 	0
>
> Proc si dovecot mysli, ze kernel nema IPv6?
>
> Diky,
> W.
>
>
>
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