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FS#1669 - Luci Interface Status showing incorrect ipv6 subnet size #6670

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openwrt-bot opened this issue Jul 18, 2018 · 0 comments
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grandegrandeviking:

I noticed the luci interface screen (both the summary showing all of the interfaces, and when editing an individual interface) is showing the incorrect IPv6 subnet size.

Devices tested:
Netgear WNDR3800, Netgear WNDR3700, and Generic x86_64

Affected versions:
18.06.0-RC1 and 18.06.0-RC2. Tested but not affected: 17.01.5.

Steps to reproduce:
This occurs with the default configuration. Openwrt is set to use a /48 ULA in the interfaces screen and my ISP assigns a /56 prefix. The LAN interface, under the default configuration, gets a /60 prefix from ISP assigned prefix and from the ULA prefix. ifconfig shows the /60 prefixes on br-lan, but the luci interface screens show a /64.

I reported this on the luci issues tracker and was told it was a bug with netifd or ubus.
openwrt/luci#1947

The good news is this does not appear to affect the functionality of dhcp assignments on the lan. If I attach a router on the lan it can obtain a prefix by dhcpv6-pd.

Thanks!

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