Hi Demi,

have done:

ndp -s fe80::1%vio0 00:00:5e:00:02:02

which results in a nearly permanent setup:
Neighbor                             Linklayer Address   Netif Expire    S Flags
2a03:4000:24:82f::                   d6:16:7b:a0:ce:63    vio0 permanent R l
2a03:4000:24:82f::1                  d6:16:7b:a0:ce:63    vio0 permanent R l
2a03:4000:24:82f::4500               d6:16:7b:a0:ce:63    vio0 permanent R l
2a03:4000:24:82f::5353               d6:16:7b:a0:ce:63    vio0 permanent R l
2a03:4000:24:82f::8022               d6:16:7b:a0:ce:63    vio0 permanent R l
fd91:24d4:fa4c:379d::1               d6:16:7b:a0:ce:64    vio1 permanent R l
fe80::1%vio0                         00:00:5e:00:02:02    vio0 23h59m54s S R
fe80::22d8:b00:89ee:ff4%vio0         2c:6b:f5:a0:77:c0    vio0 23h57m43s S R
fe80::22d8:b00:89fa:424c%vio0        10:0e:7e:26:f1:c0    vio0 23h44m43s S R
fe80::d416:7bff:fea0:ce63%vio0       d6:16:7b:a0:ce:63    vio0 permanent R l
fe80::d416:7bff:fea0:ce64%vio1       d6:16:7b:a0:ce:64    vio1 permanent R l

So the gateway is now “ticking” around the 23h59m. It doesn’t run stable at all.

Ping6 from the outside:
16 bytes from 2a03:4000:24:82f::4500, icmp_seq=16 hlim=58 time=680.134 ms
16 bytes from 2a03:4000:24:82f::4500, icmp_seq=17 hlim=58 time=81.254 ms

Aug 10 17:12:58.718515 rule 5._2.1/(match) pass in on vio0: 
2001:470:7309:8400:8258:5a7c:fe68:afdd > 2a03:4000:24:82f::4500: icmp6: echo 
request [flowlabel 0xec744]
Aug 10 17:12:59.546185 rule 3.ND.5/(match) pass in on vio0: 
fe80::22d8:b00:89ee:ff4 > ff02::1:ff00:bca4: [|icmp6] [class 0xc0]
Aug 10 17:12:59.547423 rule 3.ND.5/(match) pass in on vio0: 
fe80::22d8:b00:89ee:ff4 > ff02::1:ff4a:3f62: [|icmp6] [class 0xc0]
Aug 10 17:12:59.550876 rule 3.ND.5/(match) pass in on vio0: 
fe80::22d8:b00:89ee:ff4 > ff02::1:ff06:ad8f: [|icmp6] [class 0xc0]
Aug 10 17:12:59.554148 rule 3.ND.5/(match) pass in on vio0: 
fe80::22d8:b00:89ee:ff4 > ff02::1:ff73:d955: [|icmp6] [class 0xc0]
Aug 10 17:12:59.642650 rule 3.ND.5/(match) pass in on vio0: 
fe80::22d8:b00:89ee:ff4 > ff02::1:ff00:2: [|icmp6] [class 0xc0]

So it works like in the past, that a lot off packages goes lost first, than it 
works for a time and than it goes off again.

Kind regards,
Kay-Uwe


> The best option I know of is to add a static, permanent NDP entry
> with ndp(8) entry before bringing up the interface.  This works even
> if the peer does not respond to NDP at all.
> 
> Sincerely,
> 
> Demi

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