hmm. snack overflowed that RTNETLINK error and it told me to try ping6 ff02::2%ens3 which gave me a different address, and tried adding one of those as a default route and it got… closer but still not right

➜ ping6 ipv6.google.com
PING ipv6.google.com (2607:f8b0:4007:80f::200e) 56 data bytes
From mail.never.eu.org (2607:f130:0:f8::3213:3dfd) icmp_seq=1 Destination unreachable: Address unreachable