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502960d796
Previously, we would find DNS servers we wish to intercept traffic on by reading /etc/resolv.conf. On systems using systemd-resolved, /etc/resolv.conf points to localhost and then systemd-resolved actually uses the DNS servers listed in /run/systemd/resolve/resolv.conf. Many programs will route the DNS traffic through localhost as /etc/resolv.conf indicates and sshuttle would capture it. However, systemd-resolved also provides other interfaces for programs to resolve hostnames besides the localhost server in /etc/resolv.conf. This patch adds systemd-resolved's servers into the list of DNS servers when --dns is used. Note that sshuttle will continue to fail to intercept any traffic sent to port 853 for DNS over TLS (which systemd-resolved also supports). For more info, see: sshuttle issue #535 https://www.freedesktop.org/software/systemd/man/systemd-resolved.service.html https://github.com/systemd/systemd/issues/6076