ipコマンドを持続させる方法

アイデア2そうだねさらに、この単純なスクリプトを正しいファイルに変換することも難しくありません。ここで驚くべきことの1つは、これがip link set mocknet up自動であることです。 man interfaces良い情報を提供します。作業文書は次のとおりです。

/etc/network/interfaces.d/mocknet:

# Mocknet: 
#    A mock network meant to replace parts of the real one if they don't exist.
# 
# We are creating a network sink called mocknet. It's a dummy, so data sent to 
# this is ignored. This is useful for when we want to run the simulation without
# all other machines connected. If a machine doesn't exist, then this prevents 
# that packet from being sent to the default route and spamming the LAN.

auto mocknet
iface mocknet inet manual
#
#   This creates the dummy interface.  Dummy means that data sent here will be 
#   ignored.
    pre-up /bin/ip link add mocknet type dummy
#
#   Here we add all of the IP adresses that we might have as host on the FFS.  
#   This guarantees that we can bind to these addresses for Rx and helps us make 
#   a route for Tx
    up /bin/ip addr add 10.10.1.1/24 dev mocknet
    up /bin/ip addr add 10.10.2.1/24 dev mocknet
    up /bin/ip addr add 10.10.3.1/24 dev mocknet
    up /bin/ip addr add 10.10.4.1/24 dev mocknet
    up /bin/ip addr add 10.10.5.1/24 dev mocknet
    up /bin/ip addr add 10.10.6.1/24 dev mocknet
    up /bin/ip addr add 10.10.7.1/24 dev mocknet
    up /bin/ip addr add 10.10.8.1/24 dev mocknet
    up /bin/ip addr add 10.10.9.1/24 dev mocknet
#
#   The previous line created some default routes. Those routes are super high 
#   priority (metric=0) so they override real connections if they exist. We 
#   don't want that so here we need to delete the default routes and then add 
#   good versions. Now if a packet is sent to something in this ip range it goes 
#   to mocknet.  `metric 6000` sets the route priority super low (a bigger 
#   number is lower priority so if it conflicts with a real device, that real 
#   device will take priority and data will be sent and not ignored.
    post-up /bin/ip route del 10.10.1.0/24 && /bin/ip route add 10.10.1.0/24 dev mocknet proto kernel scope link src 10.10.1.1 metric 6000
    post-up /bin/ip route del 10.10.2.0/24 && /bin/ip route add 10.10.2.0/24 dev mocknet proto kernel scope link src 10.10.2.1 metric 6000
    post-up /bin/ip route del 10.10.3.0/24 && /bin/ip route add 10.10.3.0/24 dev mocknet proto kernel scope link src 10.10.3.1 metric 6000
    post-up /bin/ip route del 10.10.4.0/24 && /bin/ip route add 10.10.4.0/24 dev mocknet proto kernel scope link src 10.10.4.1 metric 6000
    post-up /bin/ip route del 10.10.5.0/24 && /bin/ip route add 10.10.5.0/24 dev mocknet proto kernel scope link src 10.10.5.1 metric 6000
    post-up /bin/ip route del 10.10.6.0/24 && /bin/ip route add 10.10.6.0/24 dev mocknet proto kernel scope link src 10.10.6.1 metric 6000
    post-up /bin/ip route del 10.10.7.0/24 && /bin/ip route add 10.10.7.0/24 dev mocknet proto kernel scope link src 10.10.7.1 metric 6000
    post-up /bin/ip route del 10.10.8.0/24 && /bin/ip route add 10.10.8.0/24 dev mocknet proto kernel scope link src 10.10.8.1 metric 6000
    post-up /bin/ip route del 10.10.9.0/24 && /bin/ip route add 10.10.9.0/24 dev mocknet proto kernel scope link src 10.10.9.1 metric 6000
#
#   This cleans up the interface so it doesn't fail if we try to 
#   systemctl restart networking.
    post-down /bin/ip link del mocknet

/bin/ipこれが「正しい」方法であるかどうかはわかりませんが、すべてがうまくいくようです。/sbin/ip