[PATCH v2 0/9] Introduce multiple addresses

[Jon Maloy <jmaloy@redhat.com>]

This version contains what I perceive as the least controversial
parts of my previous RFC series. It basically makes address
handling behave like before, but now allowing multiple addresses
both at the host side and the guest side.

v2:
  - Added the earlier standalone CIDR commit to the head of the series.
  - Replaced the guest namespace interface subscriptions with just
    an address observation feature, so that it works with both PASTA
    and PASST.
  - Unified 'no_copy_addrs' and 'copy_addrs' code paths, as suggested
    by David G.
  - Multiple other changes, also based on feedback from David.
  - Removed the host interface subscription patches, -for now.
    I intend to re-add them once this series is applied.
  - Outstanding question: When do we add an IPv4 link local address
    to the guest? Only in local/opaque mode? Only when
    explicitly requested? Always?
   

Jon Maloy (9):
  conf: Support CIDR notation for -a/--address option
  ip: Introduce unified multi-address data structures
  conf: Refactor conf_print() for multi-address support
  fwd: Check all configured addresses in guest accessibility functions
  arp: Check all configured addresses in ARP filtering
  conf: Allow multiple -a/--address options per address family
  pasta: Unify address configuration paths using address array
  ip: Track observed guest IPv4 addresses in unified address array
  ip: Track observed guest IPv6 addresses in unified address array

 arp.c     |  12 ++-
 conf.c    | 290 +++++++++++++++++++++++++++++++++++++-----------------
 dhcp.c    |   8 +-
 dhcpv6.c  |  10 +-
 dhcpv6.h  |   2 +-
 fwd.c     | 137 ++++++++++++++++++++------
 inany.c   |  29 ++++++
 inany.h   |  19 ++++
 ip.c      |  21 ++++
 ip.h      |   6 ++
 migrate.c | 105 ++++++++++++++++++--
 ndp.c     |   6 +-
 netlink.c |  84 ++++++++++++++++
 netlink.h |   5 +
 passt.1   |  17 +++-
 passt.h   |  26 ++---
 pasta.c   |  54 ++++++----
 tap.c     | 116 ++++++++++++++++++----
 18 files changed, 744 insertions(+), 203 deletions(-)

-- 
2.52.0