0pera:

Supply the following if possible:

• Device problem occurs on

x86 generic ext4 combine / ar71xx generic

• Software versions of OpenWrt/LEDE release, packages, etc.

fresh install

• Steps to reproduce

create a new interface
choose dhcpv6 client(disable address, auto prefix length)

• Log

Fri Mar 1 07:05:29 2019 daemon.notice netifd: Interface 'LAN6' is setting up now
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): Usage: odhcp6c [options]
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900):
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): Feature options:
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -S Wait at least sec for a DHCP-server (0)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -N Mode for requesting addresses [try|force|none]
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -P Request IPv6-Prefix (0 = auto)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -F Force IPv6-Prefix
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -V Set vendor-class option (base-16 encoded)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -u Set user-class option string
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -x : Add option opt (with value val) in sent packets (cumulative)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): Examples of IPv6 address, string and base-16 encoded options:
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -x dns:2001:2001::1,2001:2001::2 - option 23
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -x 15:office - option 15 (userclass)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -x 0x1f4:ABBA - option 500
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -x 202:'"file"' - option 202
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -c Override client-ID (base-16 encoded 16-bit type + value)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -i Use a custom interface identifier for RA handling
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -r Options to be requested (comma-separated)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -R Do not request any options except those specified with -r
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -s <script> Status update script (/usr/sbin/odhcp6c-update)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -a Don't send Accept Reconfigure option
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -f Don't send Client FQDN option
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -k Don't send a RELEASE when stopping
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -t Maximum timeout for DHCPv6-SOLICIT (120)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -m Minimum time between accepting RA updates (3)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -L Ignore default lifetime for RDNSS records
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -U Ignore Server Unicast option
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900):
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): Invocation options:
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -p Set pidfile (/var/run/odhcp6c.pid)
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -d Daemonize
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -e Write logmessages to stderr
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -v Increase logging verbosity
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900): -h Show this help
Fri Mar 1 07:05:29 2019 daemon.notice netifd: LAN6 (15900):
Fri Mar 1 07:05:29 2019 daemon.notice netifd: Interface 'LAN6' is now down


looks like some script error, got usage output in logread