awk printing random "e" that is not in string - bash

Question

I am wanting to extract ip and port from a string.
Strings look like this.
destination x.x.x.x:yyyy
where x is ip and y is port
commandout=()
while IFS= read -r line # Read a line
do
commandout+=("$line") # Append line to the array
done < <(tmsh list ltm virtual $vip | grep destination)
for output in "$commandout";
do
if [[ $output == *"destination"* ]];then
#split off ip and port
ipport=$(echo $output | awk 'BEGIN{}{print $2}')
echo $ipport | awk 'BEGIN{FS=":"}{print $1}'
echo $ipport
fi
done
declare -p commandout
for some reason, awk is printing a random "e" after the ip address. But it only appears to do so after 2.
10.10.10.10
10.10.10.10:https
declare -a commandout='([0]=" destination 10.10.10.10:https")'
12.12.12.12e
12.12.12.12:https
declare -a commandout='([0]=" destination 12.12.12.12:https")'
UPDATE:
So I attempted another test. I found strange behavior and I am unsure how to fix it.
I declare the vipip before and after it is set.
declare -p vipip
vipip=$(tmsh list ltm virtual $vip | grep destination | awk 'BEGIN{}{print $2}' | awk 'BEGIN{FS=":"}{print $1}')
echo $vipip
declare -p vipip
echo "cyle loop"
results in the following. Note that the 12.12.12.12 doesn't have an "e" on the end of it
./findvips-final.scr: line 240: declare: vipip: not found
10.10.10.10
declare -- vipip="10.10.10.10"
cyle loop
declare -- vipip="10.10.10.10"
12.12.12.12
declare -- vipip="12.12.12.12"
cyle loop
If I comment out the declare statements, I get an "e"
#declare -p vipip
vipip=$(tmsh list ltm virtual $vip | grep destination | awk 'BEGIN{}{print $2}' | awk 'BEGIN{FS=":"}{print $1}')
echo $vipip
#declare -p vipip
echo "cyle loop"
results in
10.10.10.10
cyle loop
12.12.12.12e
cyle loop
I found the answer. I have a progress meter above this and I was getting the e off of complete.
echo -ne "$((100*$z/$count))% Complete\r"
I wrapped $vipip in qoutes on the echo and it is working like I thought. UGh wait a big waste of time.

Answer 1

You can straightaway set FS like below to extract Ip from your command, no need of loop, awk can search string also
your_command | awk -F'[ :]' '/destination/{gsub(/[^0-9.]/,"",$2); print $2}'
Explanation
-F'[ :]' - set field separator
'/destination/ - search for word destination in line/record/row
gsub(/[^0-9.]/,"",$2) - remove anything other than number and dot from second field ( so that random char like e, what you said above will be removed )
print $2 - print second field