Nested Procs in an iRule

did you forget call command?

call

e.g.

 config

[root@ve11a:Active:In Sync] config  tmsh list ltm rule qux
ltm rule qux {
    proc test1 { x } {
  log local0. "test1: $x"
}
proc test2 { y } {
  log local0. "test2: $y"
  call test1 $y
}
when RULE_INIT {
  if { [TMM::cmp_group] == 0 and [TMM::cmp_unit] == 0 } {
    call test1 1
    call test2 2
  }
}
}

 /var/log/ltm

[root@ve11a:Active:In Sync] config  tail -f /var/log/ltm
Aug 16 22:54:09 ve11a info tmm[29362]: Rule /Common/qux : test1: 1
Aug 16 22:54:09 ve11a info tmm[29362]: Rule /Common/qux : test2: 2
Aug 16 22:54:09 ve11a info tmm[29362]: Rule /Common/qux : test1: 2