[FS#4216] ds-lite: Command failed: Invalid argument

[OpenWrt Bugs]

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User who did this - Marcin Juszkiewicz (hrw) 

Attached to Project - OpenWrt/LEDE Project
Summary - ds-lite:  Command failed: Invalid argument
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - ====== System info ======
 - Device problem occurs on
   * x86-64 based router
 - Software versions of OpenWrt/LEDE release, packages, etc.
   * OpenWrt 21.02.1

====== ISP connectivity options ======
My ISP (Orange Polska) provides two options for network connectivity:


  * IPv4
  * IPv6 with DS-Lite


My WAN interface is called "Orange".

===== IPv4 =====

IPv4 setup works fine. My router uses PPPoE to authenticate, setup all routes etc and things "just works".

===== IPv6 =====

IPv6 is more problematic. I can setup IPv6 only network (including LAN clients). But to get IPv4 connectivity I need to setup DS-Lite.

Installed 'ds-lite' package. Used tcpdump to get AFTR address from DHCPv6 packets. Reconfigured "Orange_6" and "Orange_DS_lite":

config interface 'Orange'
        option proto 'pppoe'
        option device 'eth0.35'
        option username 'bez_ochrony-REDACTED at neostrada.pl/ipv6'
        option password 'REDACTED'
        option ipv6 'auto'
        option ip6assign '64'

config interface 'Orange_6'
        option proto 'dhcpv6'
        option device '@Orange'
        option iface_dslite 'Orange_DS_lite'
        option reqaddress 'try'
        option reqprefix 'auto'
        option reqopts '64'

config interface 'Orange_DS_lite'
        option proto 'dslite'
        option peeraddr 'szcz01f.cgn.tpnet.pl'
        option ip6addr '2a01:ZZZZ:YYYY:XXXX::1'
        option encaplimit 'ignore'

I can see (from debug output added in /lib/netifd/proto/dslite.sh and /lib/netifd/netifd-proto.sh scripts) that it tries to configure DS-Lite link:


Sat Jan  1 13:11:14 2022 daemon.notice netifd: Orange_DS_lite (13810): dslite.sh: ip6addr: 2a01:ZZZZ:YYYY:XXXX::1
Sat Jan  1 13:11:14 2022 daemon.notice netifd: Orange_DS_lite (13810): dslite.sh: peeraddr: 2a01:1000:0:1::9114
Sat Jan  1 13:11:14 2022 daemon.notice netifd: Orange_DS_lite (13810): _proto_notify(): iface=Orange_DS_lite opts=
Sat Jan  1 13:11:14 2022 daemon.notice netifd: Orange_DS_lite (13810): _proto_notify(): json_dump={ "action": 0, "ifname": "ds-Orange_DS_lite", "link-up": true, "tunnel": { "mode": "ipip6", "mtu": 1280, "ttl": 64, "local": "2a01:ZZZZ:YYYY:XXXX::1", "remote": "2a01:1000:0:1::9114", "data": { "encaplimit": "ignore" } }, "data": { "firewall": [ { "type": "nat", "target": "ACCEPT" } ] }, "keep": false, "ipaddr": [ { "ipaddr": "192.0.0.2", "ptp": "192.0.0.1" } ], "routes": [ { "target": "0.0.0.0", "netmask": "0" } ], "interface": "Orange_DS_lite" }
Sat Jan  1 13:11:14 2022 daemon.notice netifd: Orange_DS_lite (13810): Command failed: Invalid argument


And then it loops and floods log with repeated failures.

What is wrong?

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4216

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