vpereira01

user@host:~# sysctl -n net.ipv6.auto_flowlabels
1

user@host:~# curl -6 https://code.jquery.com/jquery-3.6.0.min.js -o /dev/null
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (56) OpenSSL SSL_read: Connection reset by peer, errno 104

user@host:~# sysctl -w net.ipv6.auto_flowlabels=0

vpereira01

// bigIntInc speeds up z.Add(z, one) operations when z > 0
func bigIntInc(z *big.Int) {
	zBits := z.Bits()
	// big.NewInt( 9).Sign() == 1
	// For speed and simplicity this only tries to increment the least significant digits. 
	// Using a base 10 example: 1000+1 only affects the least significant digit.
	// Only when the least significant digit is 9, 1009+1, then more significant digits are affected.
	if z.Sign() > 0 && zBits[0] < math.MaxUint {
		// overflow does not happen due to zBits[0] < math.MaxUint check
		// uint(zBits[0])++ is not allowed by Go