xargs warning: options --max-args and --replace/-I/-i are mutually exclusive

[cweiske]

When running resolvconf.sh on a Debian 11 machine, I get warnings about xargs:

$ ./resolvconf.sh 
xargs: warning: options --max-args and --replace/-I/-i are mutually exclusive, ignoring previous --max-args value
Using api.opennic.org. as API host ...
Pinging 18 hosts to determine the top 4 ... (this might take up to a minute... or two...)
Falling back to ping/grep/awk method which is VERY unreliable. You should really consider installing fping!
xargs: warning: options --max-args and --replace/-I/-i are mutually exclusive, ignoring previous --max-args value
nameserver 178.254.22.166
nameserver 51.77.149.139
nameserver 94.16.114.254
nameserver 51.83.172.84