Support mirroring traffic from pod's localhost

[aviramha]

Following Discord:
https://discord.com/channels/933706914808889356/1252971596663095396

mirrord mirroring is interface based, meaning it only mirrors from one interface:

• It looks up 8.8.8.8, and takes the interface that the OS picks for resolving as the one it'll mirror from.
• If the lookup doesn't work, it tries "eth0"

Possible solutions:

• Bind all interfaces - issue is if host acts as of some router, we might see a stream twice. Not sure how we could "ignore it".
• Support binding multiple interfaces, let use specify - same problem as above but atleast controlable.
• Change mirroring to use iptables - we can use nflog - though above problems can still happen? using nflog will also help us with tcp assembly (I think? or maybe it was worse? can't remember)

[eyalb181]

Pending user input on Discord