[Bug 1857811] Re: qemu user static binary seems to lack support for network namespace.

[Laurent Vivier]

The interesting part in emerge.log is:

  23473 socket(16,,IPPROTO_IP) = 5
  23473 bind(5,274886353720,12,0,1,274889671712) = 0
  23473 sendto(5,275542232672,38,0,274886353960,12) = -1 errno=95 (Operation 
not supported)
  23473 close(5) = 0
  Unable to configure loopback interface: Operation not supported

So you're right 16 is AF_NETLINK

At QEMU level only one function returns  EOPNOTSUPP, the one managing
RTM_* operations (RTM_GETLINK, RTM_GETADDR, ...) and it doesn't manage a
bunch of them.

Could you provide a step by step example to reproduce the problem?

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https://bugs.launchpad.net/bugs/1857811

Title:
  qemu user static binary seems to lack support for network namespace.

Status in QEMU:
  New

Bug description:
  Whenever I execute emerge in gentoo linux in qemu-aarch64 chroot, I
  see the following error message.

  Unable to configure loopback interface: Operation not supported

  If I disable emerge's network-sandbox which utilizes network
  namespace, the error disappears.

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