nrpe 4.1: check_icmp broken

[dneuhaeuser]

with pfsense 2.7.0 and nrpe 4.1 the check_icmp plugin is no longer working.
it always reports 100% packet loss.

# ./check_icmp -H 127.0.0.1 -v
address_family: 2 (IPv4 = 2; IPv6 = 10)
setsockopt failed
Setting alarm timeout to 10 seconds
packets: 5, targets: 1
target_interval: 0.000, pkt_interval 80.000
crit.rta: 500.000
max_completion_time: 3400.000
crit = {500000, 80%}, warn = {200000, 40%}
pkt_interval: 80000  target_interval: 0  retry_interval: 0
icmp_pkt_size: 76  timeout: 10
Failed to send ping to 127.0.0.1 = Invalid argument
Failed to send ping to 127.0.0.1 = Invalid argument
Failed to send ping to 127.0.0.1 = Invalid argument
Failed to send ping to 127.0.0.1 = Invalid argument
Failed to send ping to 127.0.0.1 = Invalid argument
icmp_sent: 0  icmp_recv: 0  icmp_lost: 0
targets: 1  targets_alive: 1
CRITICAL -
127.0.0.1: rta nan, lost 100%|
rta=0.000ms;200.000;500.000;0; pl=100%;40;80;0;100 rtmax=0.000ms;;;; rtmin=0.000ms;;;;
targets: 1, targets_alive: 0, hosts_ok: 0, hosts_warn: 0, min_hosts_alive: -1

According to the nagios-plugins project changelog this bug was already fixed with their release 2.4.1:

But pfsense repo installs an ancient version of the plugins:

# ./check_icmp -V
check_icmp v (nagios-plugins 2.3.3)

Can we update this to a recent version please?