passt

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.

pasta (same binary as passt, different command) offers equivalent functionality, for network namespaces: traffic is forwarded using a tap interface inside the namespace, without the need to create further interfaces on the host, hence not requiring any capabilities or privileges.

Name
passt
Main Program
passt
Programs
  • passt
  • passt-repair
  • passt.avx2
  • pasta
  • pasta.avx2
  • qrap
Homepage
Version
2025_09_19.623dbf6
License
Platforms
  • aarch64-linux
  • armv5tel-linux
  • armv6l-linux
  • armv7a-linux
  • armv7l-linux
  • i686-linux
  • loongarch64-linux
  • m68k-linux
  • microblaze-linux
  • microblazeel-linux
  • mips-linux
  • mips64-linux
  • mips64el-linux
  • mipsel-linux
  • powerpc-linux
  • powerpc64-linux
  • powerpc64le-linux
  • riscv32-linux
  • riscv64-linux
  • s390-linux
  • s390x-linux
  • x86_64-linux
Defined
Source