Created
January 27, 2021 21:12
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Restart the network (Ubuntu 20.04)
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| #!/bin/bash | |
| # Restart the network | |
| # usage: sudo restartnet [iface] | |
| # Requires root | |
| # Guess interface for outgoing traffic | |
| TARGET=8.8.8.8 # known IP. Could also be 192.168.0.1 or similar for local networks | |
| function guess_iface { | |
| ip route get $TARGET | grep -Po '(?<=dev\s)\w+' | cut -f1 -d ' ' | |
| } | |
| IFACE="${1:-$(guess_iface)}" | |
| echo "Restarting $IFACE" | |
| ifconfig "$IFACE" down | |
| ifconfig "$IFACE" up |
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Sometimes after restarting my server uses the ISP's DNS server rather than its own internal bind9 service. This fixes it sometimes.