IPv6 on DSL - 2 default Gateways and "Network unreachable"

Hi,
I suffer with my ipv6 internet connection. I get from my provider a fixed ipv4 and ipv6 adress with a ipv6 subnet.

My problem is, that I cannot ping ipv6 hosts on the internet and get "Network unreachable".
I dont know whats wrong, I have set up all, like it was before I came from openwrt (where it was working).

default from 2003:ff23:32e:fb00::/56 via fe80::84b5:9c00:1af:f5dc dev pppoe-wan1  proto static  metric 512  pref medium
default from 2003:ff23:37f:aefb::/64 via fe80::84b5:9c00:1af:f5dc dev pppoe-wan1  proto static  metric 512  pref medium
2003:ff23:32e:fb23::/64 dev br-lan1  proto static  metric 1024  pref medium
2003:ff23:32e:fb24::/64 dev eth1.2  proto static  metric 1024  pref medium
2003:ff23:32e:fb25::/64 dev br-guest  proto static  metric 1024  pref medium
unreachable 2003:ff23:32e:fb00::/56 dev lo  proto static  metric 2147483647  error -148 pref medium
2003:ff23:37f:aefb::/64 dev pppoe-wan1  proto static  metric 256  pref medium
fdd9:3813:fd60:23::/64 dev br-lan1  proto static  metric 1024  pref medium
fdd9:3813:fd60:24::/64 dev eth1.2  proto static  metric 1024  pref medium
fdd9:3813:fd60:25::/64 dev br-guest  proto static  metric 1024  pref medium
unreachable fdd9:3813:fd60::/48 dev lo  proto static  metric 2147483647  error -148 pref medium
fe80::/64 dev eth1  proto kernel  metric 256  pref medium
fe80::/64 dev br-guest  proto kernel  metric 256  pref medium
fe80::/64 dev br-lan1  proto kernel  metric 256  pref medium
fe80::/64 dev eth1.2  proto kernel  metric 256  pref medium
fe80::/64 dev eth0  proto kernel  metric 256  pref medium
fe80::/64 dev wlan0  proto kernel  metric 256  pref medium
fe80::/64 dev wlan1  proto kernel  metric 256  pref medium
fe80::/64 dev wlan0-1  proto kernel  metric 256  pref medium
fe80::/64 dev wlan1-1  proto kernel  metric 256  pref medium
fe80::/10 dev pppoe-wan1  metric 1  pref medium
fe80::/10 dev pppoe-wan1  proto kernel  metric 256  pref medium

config interface 'wan1'
        option ifname 'eth0'
        option _orig_ifname 'eth0'
        option _orig_bridge 'false'
        option proto 'pppoe'
        option username 'dsl'
        option password 'dsl'
        option metric '1'
        option mtu '1492'
        option ipv6 '1'

config interface 'wan1_v6'
        option ifname '@wan1'
        option proto 'dhcpv6'
        option reqaddress 'none'
        option reqprefix 'auto'
        option _orig_ifname 'eth0'
        option _orig_bridge 'false'

and

root@gw:~# ifstatus wan1_v6
{
        "up": true,
        "pending": false,
        "available": true,
        "autostart": true,
        "dynamic": false,
        "uptime": 1331,
        "l3_device": "pppoe-wan1",
        "proto": "dhcpv6",
        "device": "pppoe-wan1",
        "metric": 0,
        "dns_metric": 0,
        "delegation": true,
        "ipv4-address": [

        ],
        "ipv6-address": [
                {
                        "address": "2003:ff23:37f:aefb:e103:4312:6981:7f02",
                        "mask": 64,
                        "preferred": 1422,
                        "valid": 14022
                }
        ],
        "ipv6-prefix": [
                {
                        "address": "2003:ff23:32e:fb00::",
                        "mask": 56,
                        "preferred": 13067,
                        "valid": 13067,
                        "class": "wan1_v6",
                        "assigned": {
                                "lan1": {
                                        "address": "2003:ff23:32e:fb23::",
                                        "mask": 64
                                },
                                "lan2": {
                                        "address": "2003:ff23:32e:fb24::",
                                        "mask": 64
                                },
                                "guest": {
                                        "address": "2003:ff23:32e:fb25::",
                                        "mask": 64
                                }
                        }
                }
        ],
        "ipv6-prefix-assignment": [

        ],
        "route": [
                {
                        "target": "2003:ff23:37f:aefb::",
                        "mask": 64,
                        "nexthop": "::",
                        "metric": 256,
                        "valid": 14022,
                        "source": "::\/0"
                },
                {
                        "target": "::",
                        "mask": 0,
                        "nexthop": "fe80::84b5:9c00:1af:f5dc",
                        "metric": 512,
                        "valid": 1422,
                        "source": "2003:ff23:32e:fb00::\/56"
                },
                {
                        "target": "::",
                        "mask": 0,
                        "nexthop": "fe80::84b5:9c00:1af:f5dc",
                        "metric": 512,
                        "valid": 1422,
                        "source": "2003:ff23:37f:aefb:e103:4312:6981:7f02\/64"
                }
        ],
        "dns-server": [
                "2003:180:2:3000::1:0:53",
                "2003:180:2:4000::1:0:53"
        ],
        "dns-search": [

        ],
        "inactive": {
                "ipv4-address": [

                ],
                "ipv6-address": [

                ],
                "route": [

                ],
                "dns-server": [

                ],
                "dns-search": [

                ]
        },
        "data": {
                "passthru": "001700202003018000023000000000010000005320030180000240000000000100000053"
        }
}

I have tested to remove wan1_v6, but this 2 default gateways are then also present, so they come from wan1. Any Idea whats wrong?

I am running LEDE 17.01.2 .

Regards,
Thomas

Ok, I found the problem my self... I had mwan3 package installed, because I had for some time a 2. dsl link as fallback configured. After I removed the package and rebooted, the problem is gone and I can ping6 the internet.

I don't know what changed, but the 2 default gateways are still present...

So this looks like a bug in mwan3 package?

Hello

I have suffered this in the past. Have a look at


hope it helps.