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This commit makes two fixes: 1. If an IPv6 DNS server is used, an nft rule had "ip6 protocol" in it which is invalid and caused sshuttle to exit. 2. I modified detection of udp vs tcp to follow the recommendation at https://superuser.com/questions/1560376/match-ipv6-protocol-using-nftables I also re-arranged the code slightly to reduce the number of if-statements.
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This commit makes two fixes:
If an IPv6 DNS server is used, an nft rule had "ip6 protocol" in it
which is invalid and caused sshuttle to exit.
I modified detection of udp vs tcp to follow the recommendation at
https://superuser.com/questions/1560376/match-ipv6-protocol-using-nftables
I also re-arranged the code slightly to reduce the number of
if-statements.