Why is IPv6 not so heavily using loopback as IPv4 does?

Why is IPv6 not so heavily using loopback as IPv4 does?

My OS: Linux Mint 20, kernel version 5.4.0-42.

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For the purpose of generating the output below, I defined an alias:

alias iptables-watch="sudo watch -n30 'iptables --list INPUT --verbose --line-numbers && echo && ip6tables --list INPUT --verbose --line-numbers'"

Every 30.0s: iptables --list INPUT --verbose --line-numbers && echo && ip6tables --list INPUT --verbose --line-numbers

Chain INPUT (policy DROP 1656 packets, 116K bytes)
num   pkts bytes target     prot opt in     out     source               destination
1        0     0 DROP       all  --  any    any     anywhere             anywhere             ctstate INVALID /* protection */
2    29177 3028K ACCEPT     all  --  lo     any     anywhere             anywhere             /* loopback */
3        0     0 ACCEPT     icmp --  any    any     anywhere             anywhere             limit: avg 5/sec burst 15 /* icmp4 */
4    29053   93M ACCEPT     all  --  any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED /* traffic4 */
5        0     0 ACCEPT     tcp  --  any    any     192.168.0.0/24       anywhere             ctstate NEW,ESTABLISHED tcp dpt:ssh /* ssh_local */

Chain INPUT (policy DROP 21 packets, 3321 bytes)
num   pkts bytes target     prot opt in     out     source               destination
1        1    60 ACCEPT     all      any    any     anywhere             anywhere             ctstate INVALID /* protection */
2        4   292 ACCEPT     all      lo     any     anywhere             anywhere             /* loopback */
3      678 50048 ACCEPT     ipv6-icmp    any    any     anywhere             anywhere             limit: avg 20/sec burst 50 /* icmp6 */
4     279K  421M ACCEPT     all      any    any     anywhere             anywhere             ctstate RELATED,ESTABLISHED /* traffic6 */
5       18  3172 ACCEPT     udp      any    any     anywhere             fe80::/64            ctstate NEW udp dpt:dhcpv6-client /* dhcp6 */

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I am curious as to why during those 2 hours of my computer uptime, there are 4 packets on IPv6 loopback only? Thank you.

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EDIT 1:

To complete my question based on the current answer:

$ tail -3 /etc/resolv.conf

nameserver 127.0.0.53
options edns0
search lan