PodDeleted(ctx context.Context, uid string) error
	PodAdded(ctx context.Context, pod *v1.Pod, netns Netns) error
	Close() error
}

/*
To clean up stale ztunnels

	we may need to ztunnel to send its (uid, bootid / boot time) to us
	so that we can remove stale entries when the ztunnel pod is deleted
	or when the ztunnel pod is restarted in the same pod (remove old entries when the same uid connects again, but with different boot id?)

  // https://access.redhat.com/documentation/en-us/red_hat_subscription_management/1/html/rhsm/uuid
  optional string systemUUID = 2;

  // Boot ID reported by the node.
  optional string bootID = 3;

  // Kernel Version reported by the node from 'uname -r' (e.g. 3.16.0-0.bpo.4-amd64).
  optional string kernelVersion = 4;

Baptiste Arnaud, Ben Mabey, Benedikt Linse, Beomsu Kim, Bo Wang, Boyuan Deng,
Brett Koonce, Bruno Rosa, Carl Thomé, Changming Sun, Chase Roberts, Chirag
Bhatia, Chris Antaki, Chris Hoyean Song, Chris Tava, Christos Nikolaou, Croath
Liu, cxx, Czxck001, Daniel Ylitalo, Danny Goodman, Darren Garvey, David
Brailovsky, David Norman, DavidNorman, davidpham87, ddurham2, Dhruv, DimanNe,

02DC          ; disallowed_STD3_mapped ; 0020 0303     # 1.1  SMALL TILDE
02DD          ; disallowed_STD3_mapped ; 0020 030B     # 1.1  DOUBLE ACUTE ACCENT
02DE          ; valid                  ;      ; NV8    # 1.1  MODIFIER LETTER RHOTIC HOOK
02DF          ; valid                  ;      ; NV8    # 3.0  MODIFIER LETTER CROSS ACCENT
02E0          ; mapped                 ; 0263          # 1.1  MODIFIER LETTER SMALL GAMMA