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Docker: Cant enable IPv6 listener #892

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opened 2026-10-05 04:51:08 +02:00 by adam · 4 comments
adam commented 2026-10-05 04:51:08 +02:00
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COPY FROM znc/znc-docker#19

Does container have IPv6 address? YES
docker exec -it znc ip addr

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN qlen 1000
    link/ether 00:23:24:3e:d4:86 brd ff:ff:ff:ff:ff:ff
4: docker-local: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 
    link/ether 02:42:42:f5:51:07 brd ff:ff:ff:ff:ff:ff
    inet 10.254.1.1/24 brd 10.254.1.255 scope global docker-local
       valid_lft forever preferred_lft forever
    inet6 fd80:deaf:1::1/64 scope global tentative 
       valid_lft forever preferred_lft forever
    inet6 fe80::1/64 scope link tentative 
       valid_lft forever preferred_lft forever
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 
    link/ether 02:42:7c:0d:10:80 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fd80:deaf::1/64 scope global tentative 
       valid_lft forever preferred_lft forever
    inet6 fe80::1/64 scope link tentative 
       valid_lft forever preferred_lft forever
6: yggdrasil: <POINTOPOINT,UP,LOWER_UP> mtu 65535 qdisc fq_codel state UNKNOWN qlen 500
    link/[65534] 
    inet6 DEDUCTED scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::f444:3a6a:f546:c3f4/64 scope link 
       valid_lft forever preferred_lft forever
7: hyperboria: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1304 qdisc fq_codel state UNKNOWN qlen 500
    link/[65534] 
    inet6 DEDUCTED scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::4887:da7e:aed6:6b67/64 scope link 
       valid_lft forever preferred_lft forever
8: wlx107b44562531: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 10:7b:44:56:25:31 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.41/24 brd 192.168.1.255 scope global dynamic wlx107b44562531
       valid_lft 61669sec preferred_lft 61669sec
    inet6 DEDUCTED scope global secondary dynamic 
       valid_lft 398sec preferred_lft 198sec
    inet6 DEDUCTED scope global dynamic 
       valid_lft 398sec preferred_lft 198sec
    inet6 fe80::1bb5:553f:1593:7f8f/64 scope link 
       valid_lft forever preferred_lft forever

ZNC.CONF: Removed all users for security

// WARNING
//
// Do NOT edit this file while ZNC is running!
// Use webadmin or *controlpanel instead.
//
// Altering this file by hand will forfeit all support.
//
// But if you feel risky, you might want to read help on /znc saveconfig and /znc rehash.
// Also check https://wiki.znc.in/Configuration

AnonIPLimit = 10
AuthOnlyViaModule = false
ConfigWriteDelay = 0
ConnectDelay = 5
HideVersion = true
LoadModule = webadmin
LoadModule = adminlog
LoadModule = chansaver
LoadModule = lastseen
MaxBufferSize = 1500
ProtectWebSessions = true
SSLCertFile = /znc-data/znc.pem
SSLDHParamFile = /znc-data/znc.pem
SSLKeyFile = /znc-data/znc.pem
ServerThrottle = 30
Skin = dark-clouds
StatusPrefix = *
Version = 1.7.1

<Listener listener0>
	AllowIRC = true
	AllowWeb = true
	IPv4 = false
	IPv6 = true
	Port = 6697
	SSL = true
	URIPrefix = /
</Listener>

LOG

Checking for list of available modules... 
Opening config [/znc-data/configs/znc.conf]... 
Loading global module [webadmin]... 
Loading global module [adminlog]... 
Loading global module [chansaver]... 
Loading global module [lastseen]... 
Binding to port [+6697] using ipv6... [ IPv6 is not enabled ]
Unrecoverable config error.
COPY FROM znc/znc-docker#19 Does container have IPv6 address? YES `docker exec -it znc ip addr` ``` 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN qlen 1000 link/ether 00:23:24:3e:d4:86 brd ff:ff:ff:ff:ff:ff 4: docker-local: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN link/ether 02:42:42:f5:51:07 brd ff:ff:ff:ff:ff:ff inet 10.254.1.1/24 brd 10.254.1.255 scope global docker-local valid_lft forever preferred_lft forever inet6 fd80:deaf:1::1/64 scope global tentative valid_lft forever preferred_lft forever inet6 fe80::1/64 scope link tentative valid_lft forever preferred_lft forever 5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN link/ether 02:42:7c:0d:10:80 brd ff:ff:ff:ff:ff:ff inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0 valid_lft forever preferred_lft forever inet6 fd80:deaf::1/64 scope global tentative valid_lft forever preferred_lft forever inet6 fe80::1/64 scope link tentative valid_lft forever preferred_lft forever 6: yggdrasil: <POINTOPOINT,UP,LOWER_UP> mtu 65535 qdisc fq_codel state UNKNOWN qlen 500 link/[65534] inet6 DEDUCTED scope global valid_lft forever preferred_lft forever inet6 fe80::f444:3a6a:f546:c3f4/64 scope link valid_lft forever preferred_lft forever 7: hyperboria: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1304 qdisc fq_codel state UNKNOWN qlen 500 link/[65534] inet6 DEDUCTED scope global valid_lft forever preferred_lft forever inet6 fe80::4887:da7e:aed6:6b67/64 scope link valid_lft forever preferred_lft forever 8: wlx107b44562531: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 10:7b:44:56:25:31 brd ff:ff:ff:ff:ff:ff inet 192.168.1.41/24 brd 192.168.1.255 scope global dynamic wlx107b44562531 valid_lft 61669sec preferred_lft 61669sec inet6 DEDUCTED scope global secondary dynamic valid_lft 398sec preferred_lft 198sec inet6 DEDUCTED scope global dynamic valid_lft 398sec preferred_lft 198sec inet6 fe80::1bb5:553f:1593:7f8f/64 scope link valid_lft forever preferred_lft forever ``` ZNC.CONF: Removed all users for security ``` // WARNING // // Do NOT edit this file while ZNC is running! // Use webadmin or *controlpanel instead. // // Altering this file by hand will forfeit all support. // // But if you feel risky, you might want to read help on /znc saveconfig and /znc rehash. // Also check https://wiki.znc.in/Configuration AnonIPLimit = 10 AuthOnlyViaModule = false ConfigWriteDelay = 0 ConnectDelay = 5 HideVersion = true LoadModule = webadmin LoadModule = adminlog LoadModule = chansaver LoadModule = lastseen MaxBufferSize = 1500 ProtectWebSessions = true SSLCertFile = /znc-data/znc.pem SSLDHParamFile = /znc-data/znc.pem SSLKeyFile = /znc-data/znc.pem ServerThrottle = 30 Skin = dark-clouds StatusPrefix = * Version = 1.7.1 <Listener listener0> AllowIRC = true AllowWeb = true IPv4 = false IPv6 = true Port = 6697 SSL = true URIPrefix = / </Listener> ``` LOG ``` Checking for list of available modules... Opening config [/znc-data/configs/znc.conf]... Loading global module [webadmin]... Loading global module [adminlog]... Loading global module [chansaver]... Loading global module [lastseen]... Binding to port [+6697] using ipv6... [ IPv6 is not enabled ] Unrecoverable config error. ``` <!-- github-sync-id:397582591 -->
adam closed this issue 2026-10-05 04:51:08 +02:00
adam commented 2026-10-05 04:51:09 +02:00
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Cause znc-docker/slim/Dockerfile : Line 10

# musl silently doesn't support AI_ADDRCONFIG yet, and ZNC doesn't support Happy Eyeballs yet.
# Together they cause very slow connection. So for now IPv6 is disabled here.
ARG CMAKEFLAGS="-DCMAKE_INSTALL_PREFIX=/opt/znc -DWANT_CYRUS=YES -DWANT_PERL=YES -DWANT_PYTHON=YES -DWANT_IPV6=NO"
ARG MAKEFLAGS=""
Cause znc-docker/slim/Dockerfile : Line 10 ``` # musl silently doesn't support AI_ADDRCONFIG yet, and ZNC doesn't support Happy Eyeballs yet. # Together they cause very slow connection. So for now IPv6 is disabled here. ARG CMAKEFLAGS="-DCMAKE_INSTALL_PREFIX=/opt/znc -DWANT_CYRUS=YES -DWANT_PERL=YES -DWANT_PYTHON=YES -DWANT_IPV6=NO" ARG MAKEFLAGS="" ``` <!-- github-comment-id:452886872 -->
adam commented 2026-10-05 04:51:10 +02:00
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#1571

#1571 <!-- github-comment-id:452892458 -->
adam commented 2026-10-05 04:51:11 +02:00
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#1571

#1571 <!-- github-comment-id:452892576 -->
adam commented 2026-10-05 04:51:11 +02:00
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Yes, blocked on #1571

Yes, blocked on #1571 <!-- github-comment-id:452922214 -->
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Reference: adam/znc#892