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FS#84 - sysntp does not resolves IPv6 when IPv6 only stack #8808

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openwrt-bot opened this issue Aug 10, 2016 · 4 comments
Closed

FS#84 - sysntp does not resolves IPv6 when IPv6 only stack #8808

openwrt-bot opened this issue Aug 10, 2016 · 4 comments
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@openwrt-bot
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cp:

sysntp (busybox ntp) does not resolve IPv6 addresses when the machine is IPv6 stack based only.

proposed solution exist:

https://dev.openwrt.org/attachment/ticket/12167/0001-busybox-make-ntpd-prefer-IPv6-addresses.patch

http://lists.busybox.net/pipermail/busybox/2016-August/084529.html

Already reported in

https://github.com/lede-project/source/issues/249

@openwrt-bot
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cp:

OK so after the answer of Busybox people :

http://lists.busybox.net/pipermail/busybox/2016-August/084536.html

and a discussion with blogic it seems the best solution would be to have some kind of way to tell caching DNS dnsmasq to return the IPv6 record first

@openwrt-bot
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cp:

Ok so this can be closed the problem is not with sysntp it is with openwrt default NTP servers.

using :

config timeserver ntp
list server ntp.ap.sixxs.net
list server ntp.us.sixxs.net
list server ntp.eu.sixxs.net
list server ntp.sixxs.net
option enabled 1
option enable_server 0

works fine

@openwrt-bot
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SimonIremonger:

The NTP servers now certainly contain ipv6 addresses, but ntpd/OpenWRT isn't trying them, from what I can tell, even if explicitly call ntpd manually on 2.openwrt.pool.ntp.org ...

@openwrt-bot
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SimonIremonger:

This is a real issue, expreinceding this even in OpenWRT master 2020-12-28 version.
2.openwrt.pool.ntp.org has AAAA pointers but busybox ntpd just isn't attempting ipv6 at all, even if system doesn't have IPv4-route at all.

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