Package: systemd Version: 241-7~deb10u2 Severity: normal Tags: patch Lately (since buster?) I observe that "After=network.target" is ineffective, maybe because dhcpcd runs asynchronously. I seem to get good results by creating a file
/etc/network/if-up.d/00waitup with contents as below. Cheers, Paul -- Paul Szabo [email protected] http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia Contents of /etc/network/if-up.d/00waitup : #!/bin/bash - #V0.1 22 Dec 19 wait for (ensure) interface is up # Paul Szabo [email protected] # Ensure network interface is "up". # DHCP may take long... and at buster it seems to be done asynchronously, # so systemd "After=network.target" is ineffective. # Though neither we, nor any commands we run, should ever fail or # show anything on STDERR: ensure we do not, otherwise ifup may think # we failed, and fail the interface. exec 2>&1 case "$IFACE" in eth* ) echo -E "00waitup: Waiting for $IFACE to be up ...";; * ) echo -E "00waitup: No waiting for $IFACE"; exit;; esac n=0 while :; do LINE="$(ip -o address show $IFACE)" if [ -n "$LINE" ] ; then echo -E "00waitup: $IFACE is up, 'ip -o address show $IFACE' shows '$LINE'" exit fi (( n = $n+1 )) if [ $n -gt 60 ]; then echo -E "00waitup: 'ip -o address show $IFACE' failed, seems down, giving up" exit fi echo -n -E "00waitup: Waiting for $IFACE to come up at "; date sleep 1 done
