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Default value for /proc/sys/fs/nr_open is 2^20, which is more than enough: set this hard limit as current (soft) limit on start, and drop the 'ulimit -n' from the demo script. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Description
passt implements a translation layer between a Layer-2 network interface and native Layer-4 sockets (TCP, UDP, ICMP/ICMPv6 echo) on a host. It doesn't require any capabilities or privileges, and it can be used as a simple replacement for Slirp.
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