Only sync mempool from v0.15+ (proto 70216+) nodes (#3321)
Only sync mempool from v0.15+ (proto 70216+) nodes (#3321)

Old nodes aren't able to relay DSTXes properly

Signed-off-by: cevap <34c6fceca75e456f25e7e99531e2425c6c1de443@i2pmail.org>

ionomy/ion,ionomy/ion,ionomy/ion,ionomy/ion,ionomy/ion,ionomy/ion